fix compiler warnings

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/ftp.c b/lib/ftp.c
index 3f51dd638..b3dbb0735 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -405,7 +405,7 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
   return result;
 }
 
-static char *ftpauth[]= {
+static const char *ftpauth[]= {
   "SSL", "TLS", NULL
 };