diff --git a/platform/util/src/com/intellij/openapi/progress/ProcessCanceledException.java b/platform/util/src/com/intellij/openapi/progress/ProcessCanceledException.java
index de0e2f1ed52f..8581d346d4b1 100644
--- a/platform/util/src/com/intellij/openapi/progress/ProcessCanceledException.java
+++ b/platform/util/src/com/intellij/openapi/progress/ProcessCanceledException.java
@@ -24,7 +24,7 @@ public class ProcessCanceledException extends RuntimeException implements Contro
   public ProcessCanceledException(@Nullable Throwable cause) {
     super(cause);
     if (cause instanceof ProcessCanceledException) {
-      throw new IllegalArgumentException("Must not self-wrap ProcessCanceledException: " + cause);
+      throw new IllegalArgumentException("Must not self-wrap ProcessCanceledException: ", cause);
     }
   }
 }