diff --git a/libraries/common.lib.php b/libraries/common.lib.php
index b3cb0ce3a..070b86c88 100644
--- a/libraries/common.lib.php
+++ b/libraries/common.lib.php
@@ -1939,8 +1939,14 @@ function PMA_getUniqueCondition($handle, $fields_cnt, $fields_meta, $row, $force
             }
         }
 
-        // do not use a table alias in a condition
-        if ($meta->table != $meta->orgtable) {
+        // Do not use a table alias in a condition.
+        // Test case is:
+        // select * from galerie x WHERE
+        //(select count(*) from galerie y where y.datum=x.datum)>1 
+        //
+        // But orgtable is present only with mysqli extension so the
+        // fix is only for mysqli.
+        if (isset($meta->orgtable) && $meta->table != $meta->orgtable) {
             $meta->table = $meta->orgtable;
         }