diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/JetBundle.properties b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/JetBundle.properties
index adb3f9c982a..3ff97a496c9 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/JetBundle.properties
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/JetBundle.properties
@@ -319,7 +319,7 @@ kotlin.compiler.js.option.output.copy.files=&Copy library runtime files
 kotlin.compiler.js.option.output.copy.dir=O&utput directory for library &runtime files:
 
 # Debugger
-debugger.filter.ignore.internal.classes=Do not step into specific Kotlin classes
+debugger.filter.ignore.internal.classes=Do not step into Kotlin runtime library implementation classes
 debugger.data.view.delegated.properties=Calculate values of delegated properties (may affect program execution)
 debugger.field.watchpoints.tab.title=Kotlin Field Watchpoints
 debugger.field.watchpoints.properties.panel.field.access.label=Field &access