diff --git a/compiler/tests-common/tests/org/jetbrains/kotlin/test/KotlinTestUtils.java b/compiler/tests-common/tests/org/jetbrains/kotlin/test/KotlinTestUtils.java
index aa821066581..7f1914cd3d0 100644
--- a/compiler/tests-common/tests/org/jetbrains/kotlin/test/KotlinTestUtils.java
+++ b/compiler/tests-common/tests/org/jetbrains/kotlin/test/KotlinTestUtils.java
@@ -621,7 +621,7 @@ public class KotlinTestUtils {
                     }
                 }
 
-                throw new AssertionError("Looks like this test can be unmuted. Remove IGNORE_BACKEND directive.");
+                throw new AssertionError(String.format("Looks like this test can be unmuted. Remove \"%s%s\" directive.", ignoreDirective, targetBackend));
             }
         };
     }