diff --git a/compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ExperimentalUsageChecker.kt b/compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ExperimentalUsageChecker.kt
index 320d7c416f6..89ead0f60ca 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ExperimentalUsageChecker.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ExperimentalUsageChecker.kt
@@ -21,7 +21,6 @@ import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.config.AnalysisFlag
 import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.descriptors.*
-import org.jetbrains.kotlin.descriptors.annotations.Annotated
 import org.jetbrains.kotlin.diagnostics.Errors
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.name.FqName
@@ -64,9 +63,9 @@ class ExperimentalUsageChecker(project: Project) : CallChecker {
     companion object {
         val EXPERIMENTAL_FQ_NAME = FqName("kotlin.Experimental")
         internal val USE_EXPERIMENTAL_FQ_NAME = FqName("kotlin.UseExperimental")
-        private val WAS_EXPERIMENTAL_FQ_NAME = FqName("kotlin.WasExperimental")
+        internal val WAS_EXPERIMENTAL_FQ_NAME = FqName("kotlin.WasExperimental")
         internal val USE_EXPERIMENTAL_ANNOTATION_CLASS = Name.identifier("markerClass")
-        private val WAS_EXPERIMENTAL_ANNOTATION_CLASS = Name.identifier("markerClass")
+        internal val WAS_EXPERIMENTAL_ANNOTATION_CLASS = Name.identifier("markerClass")
 
         private val LEVEL = Name.identifier("level")
         private val WARNING_LEVEL = Name.identifier("WARNING")
@@ -178,20 +177,6 @@ class ExperimentalUsageChecker(project: Project) : CallChecker {
             }
         }
 
-        internal fun Annotated.loadWasExperimentalMarkerClasses(): List<ClassDescriptor> {
-            val wasExperimental = annotations.findAnnotation(WAS_EXPERIMENTAL_FQ_NAME)
-            if (wasExperimental != null) {
-                val annotationClasses = wasExperimental.allValueArguments[WAS_EXPERIMENTAL_ANNOTATION_CLASS]
-                if (annotationClasses is ArrayValue) {
-                    return annotationClasses.value.mapNotNull { annotationClass ->
-                        (annotationClass as? KClassValue)?.value?.constructor?.declarationDescriptor as? ClassDescriptor
-                    }
-                }
-            }
-
-            return emptyList()
-        }
-
         fun checkCompilerArguments(
             module: ModuleDescriptor,
             languageVersionSettings: LanguageVersionSettings,
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/resolve/sinceKotlinUtil.kt b/compiler/frontend/src/org/jetbrains/kotlin/resolve/sinceKotlinUtil.kt
index 10077bb2787..de9c5960539 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/resolve/sinceKotlinUtil.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/resolve/sinceKotlinUtil.kt
@@ -8,9 +8,12 @@ package org.jetbrains.kotlin.resolve
 import org.jetbrains.kotlin.config.ApiVersion
 import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.descriptors.annotations.Annotated
 import org.jetbrains.kotlin.descriptors.impl.TypeAliasConstructorDescriptor
 import org.jetbrains.kotlin.resolve.calls.util.FakeCallableDescriptorForTypeAliasObject
 import org.jetbrains.kotlin.resolve.checkers.ExperimentalUsageChecker
+import org.jetbrains.kotlin.resolve.constants.ArrayValue
+import org.jetbrains.kotlin.resolve.constants.KClassValue
 
 sealed class SinceKotlinAccessibility {
     object Accessible : SinceKotlinAccessibility()
@@ -74,10 +77,7 @@ private fun DeclarationDescriptor.getOwnSinceKotlinVersion(): SinceKotlinValue?
         if (apiVersion != null) {
             // TODO: combine wasExperimentalMarkerClasses in case of several associated declarations with the same maximal API version
             if (result == null || apiVersion > result!!.apiVersion) {
-                result = SinceKotlinValue(
-                    apiVersion,
-                    with(ExperimentalUsageChecker) { loadWasExperimentalMarkerClasses() }
-                )
+                result = SinceKotlinValue(apiVersion, loadWasExperimentalMarkerClasses())
             }
         }
     }
@@ -101,3 +101,17 @@ private fun DeclarationDescriptor.getOwnSinceKotlinVersion(): SinceKotlinValue?
 
     return result
 }
+
+private fun Annotated.loadWasExperimentalMarkerClasses(): List<ClassDescriptor> {
+    val wasExperimental = annotations.findAnnotation(ExperimentalUsageChecker.WAS_EXPERIMENTAL_FQ_NAME)
+    if (wasExperimental != null) {
+        val annotationClasses = wasExperimental.allValueArguments[ExperimentalUsageChecker.WAS_EXPERIMENTAL_ANNOTATION_CLASS]
+        if (annotationClasses is ArrayValue) {
+            return annotationClasses.value.mapNotNull { annotationClass ->
+                (annotationClass as? KClassValue)?.value?.constructor?.declarationDescriptor as? ClassDescriptor
+            }
+        }
+    }
+
+    return emptyList()
+}