diff --git a/scripts/asn1_compiler.c b/scripts/asn1_compiler.c
index e000f44e37b8..c1b7ef3e24c1 100644
--- a/scripts/asn1_compiler.c
+++ b/scripts/asn1_compiler.c
@@ -650,7 +650,7 @@ int main(int argc, char **argv)
 	}
 
 	hdr = fopen(headername, "w");
-	if (!out) {
+	if (!hdr) {
 		perror(headername);
 		exit(1);
 	}