diff --git a/libraries/insert_edit.lib.php b/libraries/insert_edit.lib.php
index 6ca2880d7b..54bcdfd72e 100644
--- a/libraries/insert_edit.lib.php
+++ b/libraries/insert_edit.lib.php
@@ -1770,7 +1770,7 @@ function PMA_getSpecialCharsAndBackupFieldForInsertingMode(
     } elseif ((substr($column['True_Type'], 0, 9) == 'timestamp'
         || $column['True_Type'] == 'datetime'
         || $column['True_Type'] == 'time')
-        && strpos($column, '.') === true
+        && strpos($column['Default'], '.') === true
     ) {
         $special_chars = PMA_Util::addMicroseconds($column['Default']);
     } else {