diff --git a/libraries/common.inc.php b/libraries/common.inc.php
index 06f6417f99..2bc8928a96 100644
--- a/libraries/common.inc.php
+++ b/libraries/common.inc.php
@@ -929,11 +929,11 @@ if (! defined('PMA_MINIMUM_COMMON')) {
             PMA_fatalError(__('You should upgrade to %s %s or later.'), array('MySQL', '5.0.15'));
         }
 
-        /**
-         * DisableIS must be set to false for Drizzle, it maps SHOW commands to IS queries anyway
-         */
-        if (PMA_DRIZZLE && $cfg['Server']['DisableIS']) {
+        if (PMA_DRIZZLE) {
+            // DisableIS must be set to false for Drizzle, it maps SHOW commands to IS queries anyway
             $cfg['Server']['DisableIS'] = false;
+            // SHOW OPEN TABLES is not supported by Drizzle
+            $cfg['SkipLockedTables'] = false;
         }
 
         /**
diff --git a/libraries/config.default.php b/libraries/config.default.php
index 6d54aa6693..e28d6a8a79 100644
--- a/libraries/config.default.php
+++ b/libraries/config.default.php
@@ -596,6 +596,7 @@ $cfg['MemoryLimit'] = '0';
 
 /**
  * mark used tables, make possible to show locked tables (since MySQL 3.23.30)
+ * Is ignored for Drizzle.
  *
  * @global boolean $cfg['SkipLockedTables']
  */