diff --git a/admin/upload.php b/admin/upload.php
index c406481..1f1c645 100644
--- a/admin/upload.php
+++ b/admin/upload.php
@@ -53,6 +53,6 @@ if ($uploadOk == 0) {
     header("Location: prikazi.php?slika=$hashed_name");
     exit();
   } else {
-    echo "Sorry, there was an error uploading your file. " + $_FILES["fileToUpload"]["error"];
+    echo "Sorry, there was an error uploading your file. " . $_FILES["fileToUpload"]["error"];
   }
 }