diff --git a/libasn1fix/asn1fix_misc.c b/libasn1fix/asn1fix_misc.c
index 72317aa..9e8cc07 100644
--- a/libasn1fix/asn1fix_misc.c
+++ b/libasn1fix/asn1fix_misc.c
@@ -294,8 +294,7 @@
 			msg = opt_compare
 				?"Expressions clash"
 				:"Identifiers name clash";
-			arg->eh(1,
-				"%s: "
+			FATAL("%s: "
 				"\"%s\" at line %d has similar %s with "
 				"\"%s\" at line %d",
 				msg,