diff --git a/src/tests/kits/storage/MimeSnifferTest.cpp b/src/tests/kits/storage/MimeSnifferTest.cpp
index ebfaf73722..c1205ae8a6 100644
--- a/src/tests/kits/storage/MimeSnifferTest.cpp
+++ b/src/tests/kits/storage/MimeSnifferTest.cpp
@@ -1078,6 +1078,10 @@ MimeSnifferTest::ParserTest() {
 				cout << testCase.error << endl;
 			}
 */
+if (error != B_BAD_MIME_SNIFFER_RULE) {
+printf("rule: `%s'\n", testCase.rule);
+RES(error);
+}
 			CHK(error == B_BAD_MIME_SNIFFER_RULE);
 			CHK(parseError.FindLast(testCase.error) >= 0);
 		}
@@ -1377,4 +1381,4 @@ std::string("\000\034	000 034", 10),	// Otherwise, it thinks the NULL is the end
 		}
 	}
 #endif // !TEST_R5
-}
\ No newline at end of file
+}