diff --git a/dev-support/test-patch.py b/dev-support/test-patch.py
index 577ec4e8..b464442c 100755
--- a/dev-support/test-patch.py
+++ b/dev-support/test-patch.py
@@ -405,7 +405,7 @@ def findbugs_compare(result, output_dir, compare_url):
       remoteIo = open_url("%s%s" % (compare_url, path))
     except urllib2.HTTPError:
       report.write("Package %s: Base is missing" % (package))
-      summary.append("Package {{%p}}: Can't compare classes as base is missing." % (package))
+      summary.append("Package {{%s}}: Can't compare classes as base is missing." % (package))
       continue
 
     local = findbugs_get_bugs(open(path))