diff --git a/src/gutter-component.coffee b/src/gutter-component.coffee
index 4a88ac3fa..d9469c280 100644
--- a/src/gutter-component.coffee
+++ b/src/gutter-component.coffee
@@ -203,7 +203,7 @@ GutterComponent = React.createClass
       @lineNumberIdsByScreenRow[screenRow] = lineNumberId
 
   hasDecoration: (decorations, decoration) ->
-    decorations? and decorations[decoration.id] == decoration
+    decorations? and decorations[decoration.id] is decoration
 
   hasLineNumberNode: (lineNumberId) ->
     @lineNumberNodesById.hasOwnProperty(lineNumberId)
diff --git a/src/lines-component.coffee b/src/lines-component.coffee
index 1ecc12e3a..f73d7d2b2 100644
--- a/src/lines-component.coffee
+++ b/src/lines-component.coffee
@@ -258,7 +258,7 @@ LinesComponent = React.createClass
       @lineIdsByScreenRow[screenRow] = line.id
 
   hasDecoration: (decorations, decoration) ->
-    decorations? and decorations[decoration.id] == decoration
+    decorations? and decorations[decoration.id] is decoration
 
   lineNodeForScreenRow: (screenRow) ->
     @lineNodesByLineId[@lineIdsByScreenRow[screenRow]]