diff --git a/adminer/include/adminer.inc.php b/adminer/include/adminer.inc.php
index ed39faf4..449bdc12 100644
--- a/adminer/include/adminer.inc.php
+++ b/adminer/include/adminer.inc.php
@@ -429,7 +429,7 @@ username.form['driver'].onchange();
 						$return .= "/$val";
 					}
 				}
-				if ($key) {
+				if ($key && !ereg('set|blob|bytea|raw|file', $field["type"])) {
 					$return .= "/=";
 				}
 			}