1 files changed, 4 insertions, 1 deletions
diff --git a/src/textanalysis.js b/src/textanalysis.js
index f1277050..1f3d2cd6 100644
--- a/src/textanalysis.js
+++ b/src/textanalysis.js
@@ -477,8 +477,11 @@ function init(graph)
             autoSuggestAddName(node.name.toLowerCase());
         }
     }
+    function toLowerCase(n) {
+        return n.toLowerCase();
+    }
     function onSuggestedNameAdd(names) {
-        names.map(String.toLowerCase).forEach(autoSuggestAddName);
+        names.map(toLowerCase).forEach(autoSuggestAddName);
     }
     graph.diffBus.onValue(onNodeAdded);
     rz_bus.names.onValue(onSuggestedNameAdd);