diff --git a/packages/libcrypt/crypt3.c b/packages/libcrypt/crypt3.c
index a9de4d2fd..c029db6e5 100644
--- a/packages/libcrypt/crypt3.c
+++ b/packages/libcrypt/crypt3.c
@@ -1376,7 +1376,7 @@ static const struct crypt_format {
 
 char* crypt(const char* key, const char* salt)
 {
-	int len;
+	size_t len;
 	const struct crypt_format *cf;
 
 	for (cf = crypt_formats; cf->name != NULL; ++cf) {