diff --git a/plugins/stream-debugger/src/com/intellij/debugger/streams/ui/impl/EvaluationAwareTraceWindow.java b/plugins/stream-debugger/src/com/intellij/debugger/streams/ui/impl/EvaluationAwareTraceWindow.java
index 52a0e72aefc5..a6548a15bd3f 100644
--- a/plugins/stream-debugger/src/com/intellij/debugger/streams/ui/impl/EvaluationAwareTraceWindow.java
+++ b/plugins/stream-debugger/src/com/intellij/debugger/streams/ui/impl/EvaluationAwareTraceWindow.java
@@ -66,7 +66,8 @@ public class EvaluationAwareTraceWindow extends DialogWrapper {
     myTabContents = new ArrayList<>();
     final QualifierExpression qualifierExpression = chain.getQualifierExpression();
     final MyPlaceholder firstTab = new MyPlaceholder();
-    myTabsPane.insertTab("qualifier", AllIcons.Debugger.StreamDebugger.Tab, firstTab, qualifierExpression.getText(), 0);
+    myTabsPane.insertTab(TraceUtil.formatQualifierExpression(qualifierExpression.getText(), 30),
+                         AllIcons.Debugger.StreamDebugger.Tab, firstTab, qualifierExpression.getText(), 0);
     myTabContents.add(firstTab);
 
     for (int i = 0, chainLength = chain.length(); i < chainLength; i++) {
diff --git a/plugins/stream-debugger/src/com/intellij/debugger/streams/wrapper/TraceUtil.java b/plugins/stream-debugger/src/com/intellij/debugger/streams/wrapper/TraceUtil.java
index ae1b669e9c58..371d30400bdf 100644
--- a/plugins/stream-debugger/src/com/intellij/debugger/streams/wrapper/TraceUtil.java
+++ b/plugins/stream-debugger/src/com/intellij/debugger/streams/wrapper/TraceUtil.java
@@ -44,4 +44,13 @@ public class TraceUtil {
       .map(x -> StringUtil.shortenTextWithEllipsis(x.getText().replaceAll("\\s", ""), 30, 5, THREE_DOTS))
       .joining(", ", "(", ")");
   }
+
+  @NotNull
+  public static String formatQualifierExpression(@NotNull String expression, int maxLength) {
+    expression = expression.replaceAll("\\s", "").replaceAll(",", ", ");
+    if (expression.length() < maxLength) return expression;
+    if (expression.isEmpty()) return "qualifier";
+
+    return StringUtil.shortenTextWithEllipsis(expression, maxLength - 8, 5, THREE_DOTS);
+  }
 }