diff --git a/core/reflection.jvm/src/kotlin/reflect/KCallables.kt b/core/reflection.jvm/src/kotlin/reflect/KCallables.kt
index 4a0022b244f..ba60e23fcea 100644
--- a/core/reflection.jvm/src/kotlin/reflect/KCallables.kt
+++ b/core/reflection.jvm/src/kotlin/reflect/KCallables.kt
@@ -26,7 +26,7 @@ import kotlin.reflect.full.valueParameters
  * Returns a parameter representing the `this` instance needed to call this callable,
  * or `null` if this callable is not a member of a class and thus doesn't take such parameter.
  */
-@Deprecated("Use 'instanceParameter' from kotlin.reflect.full package", ReplaceWith("this.instanceParameter", "kotlin.reflect.full.instanceParameter"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'instanceParameter' from kotlin.reflect.full package", ReplaceWith("this.instanceParameter", "kotlin.reflect.full.instanceParameter"), level = DeprecationLevel.ERROR)
 @SinceKotlin("1.1")
 inline val KCallable<*>.instanceParameter: KParameter?
     get() = this.instanceParameter
@@ -35,7 +35,7 @@ inline val KCallable<*>.instanceParameter: KParameter?
  * Returns a parameter representing the extension receiver instance needed to call this callable,
  * or `null` if this callable is not an extension.
  */
-@Deprecated("Use 'extensionReceiverParameter' from kotlin.reflect.full package", ReplaceWith("this.extensionReceiverParameter", "kotlin.reflect.full.extensionReceiverParameter"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'extensionReceiverParameter' from kotlin.reflect.full package", ReplaceWith("this.extensionReceiverParameter", "kotlin.reflect.full.extensionReceiverParameter"), level = DeprecationLevel.ERROR)
 @SinceKotlin("1.1")
 inline val KCallable<*>.extensionReceiverParameter: KParameter?
     get() = this.extensionReceiverParameter
@@ -43,7 +43,7 @@ inline val KCallable<*>.extensionReceiverParameter: KParameter?
 /**
  * Returns parameters of this callable, excluding the `this` instance and the extension receiver parameter.
  */
-@Deprecated("Use 'valueParameters' from kotlin.reflect.full package", ReplaceWith("this.valueParameters", "kotlin.reflect.full.valueParameters"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'valueParameters' from kotlin.reflect.full package", ReplaceWith("this.valueParameters", "kotlin.reflect.full.valueParameters"), level = DeprecationLevel.ERROR)
 @SinceKotlin("1.1")
 inline val KCallable<*>.valueParameters: List<KParameter>
     get() = this.valueParameters
@@ -51,7 +51,7 @@ inline val KCallable<*>.valueParameters: List<KParameter>
 /**
  * Returns the parameter of this callable with the given name, or `null` if there's no such parameter.
  */
-@Deprecated("Use 'findParameterByName' from kotlin.reflect.full package", ReplaceWith("this.findParameterByName", "kotlin.reflect.full.findParameterByName"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'findParameterByName' from kotlin.reflect.full package", ReplaceWith("this.findParameterByName", "kotlin.reflect.full.findParameterByName"), level = DeprecationLevel.ERROR)
 @SinceKotlin("1.1")
 inline fun KCallable<*>.findParameterByName(name: String): KParameter? {
     return this.findParameterByName(name)
diff --git a/core/reflection.jvm/src/kotlin/reflect/KClasses.kt b/core/reflection.jvm/src/kotlin/reflect/KClasses.kt
index 761dd927fa3..a2dfd049335 100644
--- a/core/reflection.jvm/src/kotlin/reflect/KClasses.kt
+++ b/core/reflection.jvm/src/kotlin/reflect/KClasses.kt
@@ -86,7 +86,7 @@ inline val KClass<*>.defaultType: KType
  * Does not include members declared in supertypes.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'declaredMembers' from kotlin.reflect.full package", ReplaceWith("this.declaredMembers", "kotlin.reflect.full.declaredMembers"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'declaredMembers' from kotlin.reflect.full package", ReplaceWith("this.declaredMembers", "kotlin.reflect.full.declaredMembers"), level = DeprecationLevel.ERROR)
 inline val KClass<*>.declaredMembers: Collection<KCallable<*>>
     get() = this.declaredMembers
 
@@ -184,7 +184,7 @@ inline val <T : Any> KClass<T>.declaredMemberExtensionProperties: Collection<KPr
  * Includes superclasses and superinterfaces of the class, but does not include the class itself.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'superclasses' from kotlin.reflect.full package", ReplaceWith("this.superclasses", "kotlin.reflect.full.superclasses"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'superclasses' from kotlin.reflect.full package", ReplaceWith("this.superclasses", "kotlin.reflect.full.superclasses"), level = DeprecationLevel.ERROR)
 inline val KClass<*>.superclasses: List<KClass<*>>
     get() = this.superclasses
 
@@ -193,7 +193,7 @@ inline val KClass<*>.superclasses: List<KClass<*>>
  * There is not more than one type in the returned collection that has any given classifier.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'allSupertypes' from kotlin.reflect.full package", ReplaceWith("this.allSupertypes", "kotlin.reflect.full.allSupertypes"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'allSupertypes' from kotlin.reflect.full package", ReplaceWith("this.allSupertypes", "kotlin.reflect.full.allSupertypes"), level = DeprecationLevel.ERROR)
 inline val KClass<*>.allSupertypes: Collection<KType>
     get() = this.allSupertypes
 /**
@@ -202,14 +202,14 @@ inline val KClass<*>.allSupertypes: Collection<KType>
  * The returned collection does not contain more than one instance of any given class.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'allSuperclasses' from kotlin.reflect.full package", ReplaceWith("this.allSuperclasses", "kotlin.reflect.full.allSuperclasses"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'allSuperclasses' from kotlin.reflect.full package", ReplaceWith("this.allSuperclasses", "kotlin.reflect.full.allSuperclasses"), level = DeprecationLevel.ERROR)
 inline val KClass<*>.allSuperclasses: Collection<KClass<*>>
     get() = this.allSuperclasses
 /**
  * Returns `true` if `this` class is the same or is a (possibly indirect) subclass of [base], `false` otherwise.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'isSubclassOf' from kotlin.reflect.full package", ReplaceWith("this.isSubclassOf(base)", "kotlin.reflect.full.isSubclassOf"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'isSubclassOf' from kotlin.reflect.full package", ReplaceWith("this.isSubclassOf(base)", "kotlin.reflect.full.isSubclassOf"), level = DeprecationLevel.ERROR)
 inline fun KClass<*>.isSubclassOf(base: KClass<*>): Boolean =
     this.isSubclassOf(base)
 
@@ -217,7 +217,7 @@ inline fun KClass<*>.isSubclassOf(base: KClass<*>): Boolean =
  * Returns `true` if `this` class is the same or is a (possibly indirect) superclass of [derived], `false` otherwise.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'isSuperclassOf' from kotlin.reflect.full package", ReplaceWith("this.isSuperclassOf(derived)", "kotlin.reflect.full.isSuperclassOf"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'isSuperclassOf' from kotlin.reflect.full package", ReplaceWith("this.isSuperclassOf(derived)", "kotlin.reflect.full.isSuperclassOf"), level = DeprecationLevel.ERROR)
 inline fun KClass<*>.isSuperclassOf(derived: KClass<*>): Boolean =
         this.isSuperclassOf(derived)
 
@@ -230,7 +230,7 @@ inline fun KClass<*>.isSuperclassOf(derived: KClass<*>): Boolean =
  * @see [KClass.safeCast]
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'cast' from kotlin.reflect.full package", ReplaceWith("this.cast(value)", "kotlin.reflect.full.cast"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'cast' from kotlin.reflect.full package", ReplaceWith("this.cast(value)", "kotlin.reflect.full.cast"), level = DeprecationLevel.ERROR)
 inline fun <T : Any> KClass<T>.cast(value: Any?): T {
     return this.cast(value)
 }
@@ -243,7 +243,7 @@ inline fun <T : Any> KClass<T>.cast(value: Any?): T {
  * @see [KClass.cast]
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'safeCast' from kotlin.reflect.full package", ReplaceWith("this.safeCast(value)", "kotlin.reflect.full.safeCast"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'safeCast' from kotlin.reflect.full package", ReplaceWith("this.safeCast(value)", "kotlin.reflect.full.safeCast"), level = DeprecationLevel.ERROR)
 inline fun <T : Any> KClass<T>.safeCast(value: Any?): T? {
     return this.safeCast(value)
 }
@@ -254,7 +254,7 @@ inline fun <T : Any> KClass<T>.safeCast(value: Any?): T? {
  * (see [KParameter.isOptional]). If there are no or many such constructors, an exception is thrown.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'createInstance' from kotlin.reflect.full package", ReplaceWith("this.createInstance()", "kotlin.reflect.full.createInstance"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'createInstance' from kotlin.reflect.full package", ReplaceWith("this.createInstance()", "kotlin.reflect.full.createInstance"), level = DeprecationLevel.ERROR)
 inline fun <T : Any> KClass<T>.createInstance(): T {
     return this.createInstance()
 }
diff --git a/core/reflection.jvm/src/kotlin/reflect/KClassifiers.kt b/core/reflection.jvm/src/kotlin/reflect/KClassifiers.kt
index 247423cb895..762eda29307 100644
--- a/core/reflection.jvm/src/kotlin/reflect/KClassifiers.kt
+++ b/core/reflection.jvm/src/kotlin/reflect/KClassifiers.kt
@@ -32,7 +32,7 @@ import kotlin.reflect.full.starProjectedType
  * not `inner`, or is declared on the top level.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'createType' from kotlin.reflect.full package", ReplaceWith("this.createType(arguments, nullable, annotations)", "kotlin.reflect.full.createType"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'createType' from kotlin.reflect.full package", ReplaceWith("this.createType(arguments, nullable, annotations)", "kotlin.reflect.full.createType"), level = DeprecationLevel.ERROR)
 inline fun KClassifier.createType(
         arguments: List<KTypeProjection> = emptyList(),
         nullable: Boolean = false,
@@ -46,6 +46,6 @@ inline fun KClassifier.createType(
  * @see [KClassifier.createType]
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'starProjectedType' from kotlin.reflect.full package", ReplaceWith("this.starProjectedType", "kotlin.reflect.full.starProjectedType"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'starProjectedType' from kotlin.reflect.full package", ReplaceWith("this.starProjectedType", "kotlin.reflect.full.starProjectedType"), level = DeprecationLevel.ERROR)
 inline val KClassifier.starProjectedType: KType
     get() = this.starProjectedType
\ No newline at end of file
diff --git a/core/reflection.jvm/src/kotlin/reflect/KTypes.kt b/core/reflection.jvm/src/kotlin/reflect/KTypes.kt
index 08dc75cdf40..60d8442a2d0 100644
--- a/core/reflection.jvm/src/kotlin/reflect/KTypes.kt
+++ b/core/reflection.jvm/src/kotlin/reflect/KTypes.kt
@@ -25,7 +25,7 @@ import kotlin.reflect.full.withNullability
  * Returns a new type with the same classifier, arguments and annotations as the given type, and with the given nullability.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'withNullability' from kotlin.reflect.full package", ReplaceWith("this.withNullability(nullable)", "kotlin.reflect.full.withNullability"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'withNullability' from kotlin.reflect.full package", ReplaceWith("this.withNullability(nullable)", "kotlin.reflect.full.withNullability"), level = DeprecationLevel.ERROR)
 inline fun KType.withNullability(nullable: Boolean): KType = this.withNullability(nullable)
 
 
@@ -33,12 +33,12 @@ inline fun KType.withNullability(nullable: Boolean): KType = this.withNullabilit
  * Returns `true` if `this` type is the same or is a subtype of [other], `false` otherwise.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'isSubtypeOf' from kotlin.reflect.full package", ReplaceWith("this.isSubtypeOf(other)", "kotlin.reflect.full.isSubtypeOf"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'isSubtypeOf' from kotlin.reflect.full package", ReplaceWith("this.isSubtypeOf(other)", "kotlin.reflect.full.isSubtypeOf"), level = DeprecationLevel.ERROR)
 inline fun KType.isSubtypeOf(other: KType): Boolean = this.isSubtypeOf(other)
 
 /**
  * Returns `true` if `this` type is the same or is a supertype of [other], `false` otherwise.
  */
 @SinceKotlin("1.1")
-@Deprecated("Use 'isSupertypeOf' from kotlin.reflect.full package", ReplaceWith("this.isSupertypeOf(other)", "kotlin.reflect.full.isSupertypeOf"), level = DeprecationLevel.WARNING)
+@Deprecated("Use 'isSupertypeOf' from kotlin.reflect.full package", ReplaceWith("this.isSupertypeOf(other)", "kotlin.reflect.full.isSupertypeOf"), level = DeprecationLevel.ERROR)
 inline fun KType.isSupertypeOf(other: KType): Boolean = this.isSupertypeOf(other)