diff --git a/rdmd_test.d b/rdmd_test.d
index cb7cd2f07..843155cee 100755
--- a/rdmd_test.d
+++ b/rdmd_test.d
@@ -431,7 +431,7 @@ void runTests(string rdmdApp, string compiler, string model)
 
         res = execute(rdmdArgs ~ [forceSrc.baseName()]);
         enforce(res.status == 0, res.output);
-        enforce(!res.output.canFind("compile_force_src"));
+        enforce(!res.output.canFind("compile_force_src"), res.output);
     }
 
     auto conflictDir = forceSrc.setExtension(".dir");