diff --git a/lib/sumfiles.py b/lib/sumfiles.py
index 88b331f..220bb16 100644
--- a/lib/sumfiles.py
+++ b/lib/sumfiles.py
@@ -92,7 +92,7 @@ class DejaResults(object):
         self._write_sum_file (sum_dict, builder, None, 'gdb.sum')
 
     def write_try_build_sum_file (self, sum_dict, builder, branch):
-        self._write_sum_file (sum_dict, builder, None, 'trybuild_gdb.sum'
+        self._write_sum_file (sum_dict, builder, None, 'trybuild_gdb.sum',
                               header = "### THIS SUM FILE WAS GENERATED BY A TRY BUILD ###\n\n")
 
     def write_baseline(self, sum_dict, builder, branch, rev):