diff --git a/src/app/fold-suggester.coffee b/src/app/fold-suggester.coffee
index ce06320d4..f2bf67d8c 100644
--- a/src/app/fold-suggester.coffee
+++ b/src/app/fold-suggester.coffee
@@ -7,4 +7,4 @@ class FoldSuggester
     @aceFoldAdaptor = new AceFoldAdaptor(@buffer)
 
   isBufferRowFoldable: (bufferRow) ->
-    @aceFoldMode.getFoldWidget(@aceFoldAdaptor, null, bufferRow) == "start"
+    @aceFoldMode?.getFoldWidget(@aceFoldAdaptor, null, bufferRow) == "start"