diff --git a/platform/script-debugger/debugger-ui/src/org/jetbrains/debugger/ScopeVariablesGroup.kt b/platform/script-debugger/debugger-ui/src/org/jetbrains/debugger/ScopeVariablesGroup.kt
index 791537909d6f..76a973a4ded2 100644
--- a/platform/script-debugger/debugger-ui/src/org/jetbrains/debugger/ScopeVariablesGroup.kt
+++ b/platform/script-debugger/debugger-ui/src/org/jetbrains/debugger/ScopeVariablesGroup.kt
@@ -54,7 +54,7 @@ class ScopeVariablesGroup(val scope: Scope, parentContext: VariableContext, call
 }
 
 fun createAndAddScopeList(node: XCompositeNode, scopes: List<Scope>, context: VariableContext, callFrame: CallFrame?) {
-  val list = XValueChildrenList(scopes.size)
+  val list = XValueChildrenList(scopes.size())
   for (scope in scopes) {
     list.addTopGroup(ScopeVariablesGroup(scope, context, callFrame))
   }