diff --git a/src/assemblers.c b/src/assemblers.c
index 3cd85fe..c0e8023 100644
--- a/src/assemblers.c
+++ b/src/assemblers.c
@@ -25,7 +25,7 @@ signed int Assm_mesg(char* buf, IRC_Message* in, size_t len)
 	unsigned int cnt;
 	signed int ret;
 #ifdef UIRC_IRCV3
-	if ((ret = Assm_tags(pos, &in->tags, len - (pos - buf))) >= 0) {
+	if ((ret = Assm_tags(pos, &in->tags, len - (pos - buf))) > 0) {
 		pos += ret;
 		if (!safe_charcpy(&pos, ' ', len - (pos - buf)))
 			return ERR_UIRC_BUFFER_ERR;