diff --git a/tools/xenserver/cleanup_sm_locks.py b/tools/xenserver/cleanup_sm_locks.py
index 5d0f51783996..df64fe88b9fa 100755
--- a/tools/xenserver/cleanup_sm_locks.py
+++ b/tools/xenserver/cleanup_sm_locks.py
@@ -115,8 +115,8 @@ def main():
     if options.dry_run:
         print("** Dry Run **")
 
-    print("Total locks removed: ", lockpaths_removed)
-    print("Total namespaces removed: ", nspaths_removed)
+    print("Total locks removed: %d" % lockpaths_removed)
+    print("Total namespaces removed: %d" % nspaths_removed)
 
 
 if __name__ == '__main__':