diff --git a/omnistat/query.py b/omnistat/query.py
index cc26e2b6..c5f68dd4 100755
--- a/omnistat/query.py
+++ b/omnistat/query.py
@@ -228,7 +228,7 @@ def query_slurm_job_internal(self):
                 break
 
         if not firstTimestamp:
-            print("[ERROR]: no monitoring data found for job=%i" % self.jobID)
+            print("[ERROR]: no monitoring data found for job=%s" % self.jobID)
             sys.exit(1)
 
         # expand job window to nearest minute