diff --git a/scripts/sfx.py b/scripts/sfx.py
index 73ffd5d70..124e4053c 100644
--- a/scripts/sfx.py
+++ b/scripts/sfx.py
@@ -364,7 +364,7 @@ def confirm(rv):
     except:
         pass
 
-    sys.exit(rv)
+    sys.exit(rv or 1)
 
 
 def run(tmp, j2):