diff --git a/lib/ftp.c b/lib/ftp.c
index ac7a4bba04..c3de29f0c4 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -2760,8 +2760,8 @@ static CURLcode ftp_pp_statemachine(struct Curl_easy *data,
           ftpc->count1 = 1;
           break;
         default:
-          failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %ld",
-                data->set.ftpsslauth);
+          failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %d",
+                (int)data->set.ftpsslauth);
           return CURLE_UNKNOWN_OPTION; /* we do not know what to do */
         }
         result = Curl_pp_sendf(data, &ftpc->pp, "AUTH %s",
diff --git a/lib/setopt.c b/lib/setopt.c
index 7030ae1418..5464d07f79 100644
--- a/lib/setopt.c
+++ b/lib/setopt.c
@@ -883,7 +883,7 @@ static CURLcode setopt_long(struct Curl_easy *data, CURLoption option,
   case CURLOPT_FTP_SSL_CCC:
     if((arg < CURLFTPSSL_CCC_NONE) || (arg >= CURLFTPSSL_CCC_LAST))
       return CURLE_BAD_FUNCTION_ARGUMENT;
-    data->set.ftp_ccc = arg;
+    data->set.ftp_ccc = (unsigned char)arg;
     break;
 
   case CURLOPT_FTP_SKIP_PASV_IP:
@@ -900,7 +900,7 @@ static CURLcode setopt_long(struct Curl_easy *data, CURLoption option,
      */
     if((arg < CURLFTPAUTH_DEFAULT) || (arg >= CURLFTPAUTH_LAST))
       return CURLE_BAD_FUNCTION_ARGUMENT;
-    data->set.ftpsslauth = arg;
+    data->set.ftpsslauth = (unsigned char)arg;
     break;
   case CURLOPT_ACCEPTTIMEOUT_MS:
     /*
diff --git a/lib/urldata.h b/lib/urldata.h
index 7d7236cfac..1f3312be0f 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1456,8 +1456,8 @@ struct UserDefined {
 #ifndef CURL_DISABLE_FTP
   timediff_t accepttimeout;   /* in milliseconds, 0 means no timeout */
   unsigned char ftp_filemethod; /* how to get to a file: curl_ftpfile  */
-  long ftpsslauth;  /* what AUTH XXX to try: curl_ftpauth */
-  long ftp_ccc;     /* FTP CCC options: curl_ftpccc */
+  unsigned char ftpsslauth; /* what AUTH XXX to try: curl_ftpauth */
+  unsigned char ftp_ccc;   /* FTP CCC options: curl_ftpccc */
 #endif
 #if !defined(CURL_DISABLE_FTP) || defined(USE_SSH)
   struct curl_slist *quote;     /* after connection is established */