diff --git a/validate-generate b/validate-generate
index 03d8895..b49ff97 100755
--- a/validate-generate
+++ b/validate-generate
@@ -23,8 +23,8 @@ print(font.os2_weight)
 print(font.italicangle)
 
 bitmask = font.validate();
-# if bitmask != 0:
-#  the  exit(42);
+if bitmask != 0:
+  exit(42);
 
 font.generate("${basename}.ttf", flags=("opentype", "dummy-dsig"));
 font.generate("OTF/${basename}.otf", flags=("opentype", "dummy-dsig"));