diff --git a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebuggerHistoryManager.java b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebuggerHistoryManager.java
index 684c2e314317..603f6c8c9c28 100644
--- a/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebuggerHistoryManager.java
+++ b/platform/xdebugger-impl/src/com/intellij/xdebugger/impl/XDebuggerHistoryManager.java
@@ -41,7 +41,7 @@ public class XDebuggerHistoryManager implements PersistentStateComponent<Element
   }
 
   public boolean addRecentExpression(@NotNull @NonNls String id, @Nullable XExpression expression) {
-    if (XDebuggerUtilImpl.isEmptyExpression(expression)) {
+    if (XDebuggerUtilImpl.isEmptyExpression(expression) || expression.getExpression().length() > 100000) {
       return false;
     }