diff --git a/wally/run_test.py b/wally/run_test.py
index af317b3..f99f445 100755
--- a/wally/run_test.py
+++ b/wally/run_test.py
@@ -365,7 +365,7 @@
                                   creds.auth_url,
                                   True)
 
-    logger.debug(("OS_CREDS: user={0.name} tenant={0.tenant}" +
+    logger.debug(("OS_CREDS: user={0.name} tenant={0.tenant} " +
                   "auth_url={0.auth_url} insecure={0.insecure}").format(creds))
 
     return creds