diff --git a/lib/ftp.c b/lib/ftp.c
index 1b195ef09e..f092cbb3a8 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -3264,7 +3264,7 @@ static CURLcode ftp_nb_type(struct connectdata *conn,
 {
   struct ftp_conn *ftpc = &conn->proto.ftpc;
   CURLcode result;
-  char want = ascii?'A':'I';
+  char want = (char)(ascii?'A':'I');
 
   if (ftpc->transfertype == want) {
     state(conn, newstate);
diff --git a/lib/url.c b/lib/url.c
index 878c92d44b..afb0b3837f 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -2884,7 +2884,7 @@ static CURLcode setup_range(struct SessionHandle *data)
     else
       req->range = strdup(data->set.str[STRING_SET_RANGE]);
 
-    req->rangestringalloc = req->range?TRUE:FALSE;
+    req->rangestringalloc = (unsigned char)(req->range?TRUE:FALSE);
 
     if(!req->range)
       return CURLE_OUT_OF_MEMORY;