diff --git a/r5dev/thirdparty/curl/telnet.c b/r5dev/thirdparty/curl/telnet.c
index 5cceed25..64303dff 100644
--- a/r5dev/thirdparty/curl/telnet.c
+++ b/r5dev/thirdparty/curl/telnet.c
@@ -968,7 +968,7 @@ static void suboption(struct connectdata *conn)
         tmplen = (strlen(v->data) + 1);
         /* Add the variable only if it fits */
         if(len + tmplen < (int)sizeof(temp)-6) {
-          if(sscanf(v->data, "%127[^,],%127s", varname, varval)) {
+          if(sscanf(v->data, "%127[^,],%127s", varname, varval) == 2) {
             snprintf((char *)&temp[len], sizeof(temp) - len,
                      "%c%s%c%s", CURL_NEW_ENV_VAR, varname,
                      CURL_NEW_ENV_VALUE, varval);