diff --git a/comparisons/compare-maxmem-summary.py b/comparisons/compare-maxmem-summary.py
index dc5447c45b4..3bff17e4d5d 100755
--- a/comparisons/compare-maxmem-summary.py
+++ b/comparisons/compare-maxmem-summary.py
@@ -154,7 +154,8 @@ def stepfn(step):
         '</table><table><tr><td style="color: orange">'
         + "warn threshold %0.2f" % threshold
         + '%</td></tr><tr><td style="color: red">'
-        +"error threshold %0.2f" % error_threshold + "%</td></tr>",
+        + "error threshold %0.2f" % error_threshold
+        + "%</td></tr>",
         "<tr><td>max memory used:<BR>&lt;baseline (MB)&gt;<BR>&lt;PR (MB)&gt;<BR>&lt;100* (baseline - PR)/baseline&gt;</tr>",
     ]
     if summaryFormat == "html":