diff --git a/modules/module/schemas/module_trigger.xml b/modules/module/schemas/module_trigger.xml
index c66e41a44..b00d4790b 100644
--- a/modules/module/schemas/module_trigger.xml
+++ b/modules/module/schemas/module_trigger.xml
@@ -1,7 +1,7 @@
 <table name="module_trigger">
-    <column name="trigger_name" type="varchar" size="80" notnull="notnull" index="idx_trigger_position" utf8mb4="false" />
-    <column name="called_position" type="varchar" size="20" notnull="notnull" index="idx_trigger_position" utf8mb4="false" />
-    <column name="module" type="varchar" size="80" notnull="notnull" index="idx_module" utf8mb4="false" />
-    <column name="type" type="varchar" size="80" notnull="notnull" index="idx_type" utf8mb4="false" />
-    <column name="called_method" type="varchar" size="80" notnull="notnull" index="idx_called_method" utf8mb4="false" />
+    <column name="trigger_name" type="varchar" size="80" notnull="notnull" unique="idx_trigger" utf8mb4="false" />
+    <column name="called_position" type="varchar" size="15" notnull="notnull" unique="idx_trigger" utf8mb4="false" />
+    <column name="module" type="varchar" size="80" notnull="notnull" unique="idx_trigger" utf8mb4="false" />
+    <column name="type" type="varchar" size="15" notnull="notnull" unique="idx_trigger" utf8mb4="false" />
+    <column name="called_method" type="varchar" size="80" notnull="notnull" unique="idx_trigger" utf8mb4="false" />
 </table>