diff --git a/res/res_crypto.c b/res/res_crypto.c
index 4ae0851d69..7c38e3d28b 100644
--- a/res/res_crypto.c
+++ b/res/res_crypto.c
@@ -116,7 +116,6 @@ static int pw_cb(char *buf, int size, int rwflag, void *userdata)
 		key->infd = -2;
 		return -1;
 	}
-	memset(buf, 0, sizeof(buf));
 	tmp = ast_hide_password(key->infd);
 	memset(buf, 0, size);
 	res = read(key->infd, buf, size);