diff --git a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/KotlinScriptConfigurationManager.kt b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/KotlinScriptConfigurationManager.kt
index 13243623a96..a184891640a 100644
--- a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/KotlinScriptConfigurationManager.kt
+++ b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/KotlinScriptConfigurationManager.kt
@@ -56,7 +56,7 @@ class KotlinScriptConfigurationManager(
     init {
         reloadScriptDefinitions()
 
-        StartupManager.getInstance(project).registerPostStartupActivity {
+        StartupManager.getInstance(project).runWhenProjectIsInitialized {
             cacheAllScriptsExtraImports()
             invalidateLocalCaches()
             notifyRootsChanged()