diff --git a/modules/module/module.controller.php b/modules/module/module.controller.php
index fd560a424..5c367b229 100644
--- a/modules/module/module.controller.php
+++ b/modules/module/module.controller.php
@@ -108,7 +108,7 @@
          **/
 		function deleteModuleExtend($parent_module, $extend_module, $type, $kind=''){
 			$cache_file = './files/config/module_extend.php';
-			FileHandler::deleteFile($cache_file);
+			FileHandler::removeFile($cache_file);
 
             $args->parent_module = $parent_module;
             $args->extend_module = $extend_module;
diff --git a/modules/module/queries/deleteModuleExtend.xml b/modules/module/queries/deleteModuleExtend.xml
index 35dc22f8c..e0b1d1f3a 100644
--- a/modules/module/queries/deleteModuleExtend.xml
+++ b/modules/module/queries/deleteModuleExtend.xml
@@ -3,7 +3,7 @@
         <table name="module_extend" />
     </tables>
     <conditions>
-        <condition operation="equal" column="child_module" var="child_module" notnull="notnull" pipe="and" />
+        <condition operation="equal" column="parent_module" var="parent_module" notnull="notnull" pipe="and" />
         <condition operation="equal" column="extend_module" var="extend_module" pipe="and" />
         <condition operation="equal" column="type" var="type" pipe="and" />
         <condition operation="equal" column="kind" var="kind" pipe="and" />