diff --git a/crypt.h b/crypt.h
index 197191f..7242cdf 100644
--- a/crypt.h
+++ b/crypt.h
@@ -6,7 +6,6 @@ struct crypt_ops {
 	void *s;
 };
 
-int cryptmain(int argc, char **,
-	      struct crypt_ops *, uint8_t *, size_t);
+int cryptmain(int, char **, struct crypt_ops *, uint8_t *, size_t);
 int cryptsum(struct crypt_ops *, FILE *, const char *, uint8_t *);
 void mdprint(const uint8_t *, const char *, size_t);