diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index d87a267d46..c1272dfa40 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -15662,7 +15662,7 @@ static int get_rdnis(struct sip_pvt *p, struct sip_request *oreq, char **name, c
 			}
 			/* Remove enclosing double-quotes */
 			if (*reason_param == '"')
-				ast_strip_quoted(reason_param, "\"", "\"");
+				reason_param = ast_strip_quoted(reason_param, "\"", "\"");
 			if (!ast_strlen_zero(reason_param)) {
 				sip_set_redirstr(p, reason_param);
 				if (p->owner) {