diff --git a/src/main/java/gwt/material/design/addins/client/fileuploader/MaterialFileUploader.java b/src/main/java/gwt/material/design/addins/client/fileuploader/MaterialFileUploader.java
index 95021b2f1..27030c989 100644
--- a/src/main/java/gwt/material/design/addins/client/fileuploader/MaterialFileUploader.java
+++ b/src/main/java/gwt/material/design/addins/client/fileuploader/MaterialFileUploader.java
@@ -251,18 +251,18 @@ protected void initDropzone(Element e, Element template, String previews, Elemen
                 code = file.xhr.status;
             }
 
-            if (response.indexOf("401") >= 0) {
+            if (code.equals("401")) {
                 response = "Unauthorized. Your session may have expired. Log in and try again.";
                 globalResponse = response;
                 UnauthorizedEvent.fire(this, convertUploadFile(file), new UploadResponse(file.xhr.status, file.xhr.statusText, response));
             }
 
-            if (response.indexOf("404") >= 0) {
+            if (code.equals("404")) {
                 response = "There is a problem uploading your file.";
                 globalResponse = response;
             }
 
-            if (response.indexOf("500") >= 0) {
+            if (code.equals("500")) {
                 response = "There is a problem uploading your file.";
                 globalResponse = response;
             }
@@ -749,4 +749,4 @@ public void onMaxFilesExceeded(MaxFilesExceededEvent<UploadFile> event) {
             }
         }, MaxFilesExceededEvent.getType());
     }
-}
\ No newline at end of file
+}