diff --git a/js/views/file_input_view.js b/js/views/file_input_view.js
index 15d3c667..4055cd60 100644
--- a/js/views/file_input_view.js
+++ b/js/views/file_input_view.js
@@ -234,29 +234,29 @@
         },
 
         openDropped: function(e) {
-            if (e.originalEvent.dataTransfer.types[0] != "Files") return;
+            if (e.originalEvent.dataTransfer.types[0] != 'Files') return;
 
             e.stopPropagation();
             e.preventDefault();
             this.file = e.originalEvent.dataTransfer.files[0];
             this.previewImages();
-            this.$el.removeClass("dropoff");
+            this.$el.removeClass('dropoff');
         },
 
         showArea: function(e) {
-            if (e.originalEvent.dataTransfer.types[0] != "Files") return;
+            if (e.originalEvent.dataTransfer.types[0] != 'Files') return;
 
             e.stopPropagation();
             e.preventDefault();
-            this.$el.addClass("dropoff");
+            this.$el.addClass('dropoff');
         },
 
         hideArea: function(e) {
-            if (e.originalEvent.dataTransfer.types[0] != "Files") return;
+            if (e.originalEvent.dataTransfer.types[0] != 'Files') return;
 
             e.stopPropagation();
             e.preventDefault();
-            this.$el.removeClass("dropoff");
+            this.$el.removeClass('dropoff');
         }
     });
 })();