diff --git a/src/app/point.coffee b/src/app/point.coffee
index e471ad6c6..6dd3eca27 100644
--- a/src/app/point.coffee
+++ b/src/app/point.coffee
@@ -1,10 +1,12 @@
+_ = require 'underscore'
+
 module.exports =
 class Point
   @fromObject: (object) ->
     if object instanceof Point
       object
     else
-      if object instanceof Array
+      if _.isArray(object)
         [row, column] = object
       else
         { row, column } = object
diff --git a/src/app/range.coffee b/src/app/range.coffee
index a3870ea66..d72ef6514 100644
--- a/src/app/range.coffee
+++ b/src/app/range.coffee
@@ -31,7 +31,7 @@ class Range
     new Range(@start.copy(), @end.copy())
 
   isEqual: (other) ->
-    if other instanceof Array and other.length == 2
+    if _.isArray(other) and other.length == 2
       other = new Range(other...)
 
     other.start.isEqual(@start) and other.end.isEqual(@end)