diff --git a/hack/verify-flags-underscore.py b/hack/verify-flags-underscore.py
index 850bf3e851c..8b11d8da361 100755
--- a/hack/verify-flags-underscore.py
+++ b/hack/verify-flags-underscore.py
@@ -197,7 +197,7 @@ def load_exceptions(rootdir):
     for exception in exception_file.read().splitlines():
         out = exception.split(":", 1)
         if len(out) != 2:
-            printf("Invalid line in exceptions file: %s" % exception)
+            print("Invalid line in exceptions file: %s" % exception)
             continue
         filename = out[0]
         line = out[1]