diff --git a/ChangeLog b/ChangeLog
index a59f54763..b34ba4361 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -96,6 +96,8 @@
           (thanks to Kent R. Spillner).
 - Included 'problems' script in build dir
           (thanks to Gordon Ball).
+- The 'run_all' script was not correctly using exit code 0 when all tests pass
+          (thanks to Gordon Ball).
 
 ------ current release ---------------------------
 
diff --git a/test/problems b/test/problems
index 677a9761f..5bacda419 100755
--- a/test/problems
+++ b/test/problems
@@ -129,4 +129,4 @@ if __name__ == "__main__":
         print_category(expected)
 
     # If we encoutered any failures, return non-zero code
-    sys.exit(1 if error_int or unexpected_int else 0)
+    sys.exit(1 if int(error_int) or int(unexpected_int) else 0)