diff --git a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDependenciesUpdater.kt b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDependenciesUpdater.kt
index ce25ecedcd7..6cf8c88fe3e 100644
--- a/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDependenciesUpdater.kt
+++ b/idea/idea-core/src/org/jetbrains/kotlin/idea/core/script/ScriptDependenciesUpdater.kt
@@ -96,7 +96,7 @@ class ScriptDependenciesUpdater(
     }
 
     fun reloadModifiedScripts() {
-        for (it in modifiedScripts) {
+        for (it in modifiedScripts.filter { cache[it] != null }) {
             performUpdate(it)
         }
         modifiedScripts.clear()