diff --git a/compiler/node.pas b/compiler/node.pas
index 174963a6fd..6f4a10aabc 100644
--- a/compiler/node.pas
+++ b/compiler/node.pas
@@ -544,6 +544,8 @@ implementation
       begin
         { reading of node references isn't implemented yet (FK) }
         internalerror(200506182);
+        { avoid warning }
+        result := nil;
       end;