diff --git a/core/reflection/src/kotlin/reflect/KMemberProperty.kt b/core/reflection/src/kotlin/reflect/KMemberProperty.kt
index 233a369617f..2c7f46d2e05 100644
--- a/core/reflection/src/kotlin/reflect/KMemberProperty.kt
+++ b/core/reflection/src/kotlin/reflect/KMemberProperty.kt
@@ -16,10 +16,10 @@
 
 package kotlin.reflect
 
-public trait KMemberProperty<T, out R> : KProperty<R> {
+public trait KMemberProperty<T : Any, out R> : KProperty<R> {
     public fun get(receiver: T): R
 }
 
-public trait KMutableMemberProperty<T, R> : KMemberProperty<T, R>, KMutableProperty<R> {
+public trait KMutableMemberProperty<T : Any, R> : KMemberProperty<T, R>, KMutableProperty<R> {
     public fun set(receiver: T, value: R)
 }
diff --git a/core/runtime.jvm/src/kotlin/reflect/jvm/internal/KMemberPropertyImpl.kt b/core/runtime.jvm/src/kotlin/reflect/jvm/internal/KMemberPropertyImpl.kt
index f44573619fd..0f3d18d96e9 100644
--- a/core/runtime.jvm/src/kotlin/reflect/jvm/internal/KMemberPropertyImpl.kt
+++ b/core/runtime.jvm/src/kotlin/reflect/jvm/internal/KMemberPropertyImpl.kt
@@ -19,7 +19,7 @@ package kotlin.reflect.jvm.internal
 import java.lang.reflect.Field
 import java.lang.reflect.Method
 
-open class KMemberPropertyImpl<T, out R>(
+open class KMemberPropertyImpl<T : Any, out R>(
         public override val name: String,
         protected val owner: KClassImpl<T>
 ) : KMemberProperty<T, R>, KPropertyImpl<R> {
@@ -45,7 +45,7 @@ open class KMemberPropertyImpl<T, out R>(
     }
 }
 
-class KMutableMemberPropertyImpl<T, R>(
+class KMutableMemberPropertyImpl<T : Any, R>(
         name: String,
         owner: KClassImpl<T>
 ) : KMutableMemberProperty<T, R>, KMutablePropertyImpl<R>, KMemberPropertyImpl<T, R>(name, owner) {