diff --git a/scripts/tripleo-container-image-prepare b/scripts/tripleo-container-image-prepare
index 57d06f5b9..dac80144d 100755
--- a/scripts/tripleo-container-image-prepare
+++ b/scripts/tripleo-container-image-prepare
@@ -133,4 +133,4 @@ if __name__ == '__main__':
         log.info(result)
         print(result)
     except Exception as e:
-        log.exception('Image prepare failed', e)
+        log.exception("Image prepare failed: {}".format(e))