diff --git a/src/cluster_legacy.c b/src/cluster_legacy.c
index def572c24..b913cd567 100644
--- a/src/cluster_legacy.c
+++ b/src/cluster_legacy.c
@@ -1185,6 +1185,7 @@ clusterLink *createClusterLink(clusterNode *node) {
  * This function will just make sure that the original node associated
  * with this link will have the 'link' field set to NULL. */
 void freeClusterLink(clusterLink *link) {
+    serverAssert(link != NULL);
     if (link->conn) {
         connClose(link->conn);
         link->conn = NULL;
@@ -5815,6 +5816,10 @@ int handleDebugClusterCommand(client *c) {
         addReplyErrorFormat(c, "Unknown node %s", (char *)c->argv[4]->ptr);
         return 1;
     }
+    if (n == server.cluster->myself) {
+        addReplyErrorFormat(c, "Cannot free cluster link(s) to myself");
+        return 1;
+    }
 
     /* Terminate the link based on the direction or all. */
     if (!strcasecmp(c->argv[3]->ptr, "from")) {