diff --git a/src/js/easymde.js b/src/js/easymde.js
index 6b796f3..5c1e969 100644
--- a/src/js/easymde.js
+++ b/src/js/easymde.js
@@ -2356,7 +2356,7 @@ EasyMDE.prototype.uploadImage = function (file, onSuccess, onError) {
     }
 
     var formData = new FormData();
-    formData.append('image', file);
+    formData.append('image[file]', file);
 
     // insert CSRF token if provided in config.
     if (self.options.imageCSRFToken) {