diff --git a/isisd/isis_zebra.c b/isisd/isis_zebra.c
index ada8f1ad297b..3790eebcd73c 100644
--- a/isisd/isis_zebra.c
+++ b/isisd/isis_zebra.c
@@ -1130,6 +1130,9 @@ static int isis_zebra_process_srv6_locator_chunk(ZAPI_CALLBACK_ARGS)
 	enum srv6_endpoint_behavior_codepoint behavior;
 	bool allocated = false;
 
+	if (!isis)
+		return;
+
 	/* Decode the received zebra message */
 	s = zclient->ibuf;
 	if (zapi_srv6_locator_chunk_decode(s, chunk) < 0)
@@ -1216,6 +1219,9 @@ static int isis_zebra_process_srv6_locator_add(ZAPI_CALLBACK_ARGS)
 	struct listnode *node;
 	struct isis_area *area;
 
+	if (!isis)
+		return;
+
 	/* Decode the SRv6 locator */
 	if (zapi_srv6_locator_decode(zclient->ibuf, &loc) < 0)
 		return -1;
@@ -1265,6 +1271,9 @@ static int isis_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS)
 	struct isis_srv6_sid *sid;
 	struct srv6_adjacency *sra;
 
+	if (!isis)
+		return;
+
 	/* Decode the received zebra message */
 	if (zapi_srv6_locator_decode(zclient->ibuf, &loc) < 0)
 		return -1;