diff --git a/ext/standard/crypt.c b/ext/standard/crypt.c
index 97ff2fc04d3..47456be4889 100644
--- a/ext/standard/crypt.c
+++ b/ext/standard/crypt.c
@@ -149,7 +149,7 @@ PHP_FUNCTION(crypt)
 	{
 		struct crypt_data buffer;
 		memset(&buffer, 0, sizeof(buffer));
-		RETURN_STRING(crypt_r(str, salt, &buffer));
+		RETURN_STRING(crypt_r(str, salt, &buffer), 1);
 	}
 #else
 	RETURN_STRING(crypt(str, salt), 1);