diff --git a/source/blender/blenkernel/intern/node.cc b/source/blender/blenkernel/intern/node.cc
index 4aec5a9e667..1bf95369794 100644
--- a/source/blender/blenkernel/intern/node.cc
+++ b/source/blender/blenkernel/intern/node.cc
@@ -2364,7 +2364,7 @@ bNodeLink *nodeAddLink(
     ntree->update |= NTREE_UPDATE_LINKS;
   }
 
-  if (link->tosock->flag & SOCK_MULTI_INPUT) {
+  if (link != nullptr && link->tosock->flag & SOCK_MULTI_INPUT) {
     link->multi_input_socket_index = node_count_links(ntree, link->tosock) - 1;
   }