diff --git a/t3lib/class.t3lib_tcemain.php b/t3lib/class.t3lib_tcemain.php
index 3dee717..1c1cdf5 100644
--- a/t3lib/class.t3lib_tcemain.php
+++ b/t3lib/class.t3lib_tcemain.php
@@ -612,6 +612,7 @@ class t3lib_TCEmain {
 			if (!$modifyAccessList) {
 				$id = 0;
 				$this->log($table, $id, 2, 0, 1, "Attempt to modify table '%s' without permission", 1, array($table));
+				throw new RuntimeException('No access to modify table "' . $table . '".', 1301769338);
 			}
 			if (isset($TCA[$table]) && !$this->tableReadOnly($table) && is_array($this->datamap[$table]) && $modifyAccessList) {
 				if ($this->reverseOrder) {
@@ -2590,6 +2591,7 @@ class t3lib_TCEmain {
 			if (!$modifyAccessList) {
 				$id = 0;
 				$this->log($table, $id, 2, 0, 1, "Attempt to modify table '%s' without permission", 1, array($table));
+				throw new RuntimeException('No access to modify table "' . $table . '".', 1301769341);
 			} // FIXME: $id not set here (Comment added by Sebastian Kurfürst)
 
 				// Check basic permissions and circumstances: