diff --git a/classes/db/DBMysql.class.php b/classes/db/DBMysql.class.php
index fd331f5fa..dd883c682 100644
--- a/classes/db/DBMysql.class.php
+++ b/classes/db/DBMysql.class.php
@@ -264,8 +264,8 @@
             $result = $this->_query($query);
             if($this->isError()) return;
             $output = $this->_fetch($result);
-            if($output->Key_name == $index_name) return true;
-            return false;
+            if(!$output) return false;
+            return true;
         }
 
         /**
diff --git a/classes/db/DBMysql_innodb.class.php b/classes/db/DBMysql_innodb.class.php
index 634b76fbd..866ef2f36 100644
--- a/classes/db/DBMysql_innodb.class.php
+++ b/classes/db/DBMysql_innodb.class.php
@@ -273,8 +273,8 @@
             $result = $this->_query($query);
             if($this->isError()) return;
             $output = $this->_fetch($result);
-            if($output->Key_name == $index_name) return true;
-            return false;
+            if(!$output) return false;
+            return true;
         }
 
         /**