diff --git a/src/ConfigManager.cpp b/src/ConfigManager.cpp
index d4e70c6..362f893 100644
--- a/src/ConfigManager.cpp
+++ b/src/ConfigManager.cpp
@@ -42,6 +42,13 @@ namespace shellanything
 
   ConfigManager::~ConfigManager()
   {
+    // delete configurations
+    for (size_t i = 0; i < mConfigurations.size(); i++)
+    {
+      Configuration* config = mConfigurations[i];
+      delete config;
+    }
+    mConfigurations.Clear();
   }
 
   ConfigManager & ConfigManager::GetInstance()
diff --git a/src/Configuration.cpp b/src/Configuration.cpp
index 1273640..4c5f26c 100644
--- a/src/Configuration.cpp
+++ b/src/Configuration.cpp
@@ -115,6 +115,13 @@ namespace shellanything
 
   Configuration::~Configuration()
   {
+    // delete menus
+    for (size_t i = 0; i < mMenus.size(); i++)
+    {
+      Menu* sub = mMenus[i];
+      delete sub;
+    }
+    mMenus.Clear();
   }
 
   Configuration * Configuration::LoadFile(const std::string & path, std::string & error)
diff --git a/src/Menu.cpp b/src/Menu.cpp
index 4baae9b..b49273f 100644
--- a/src/Menu.cpp
+++ b/src/Menu.cpp
@@ -51,7 +51,7 @@ namespace shellanything
 
   Menu::~Menu()
   {
-    // validities
+    // delete validities
     for(size_t i=0; i<mValidities.size(); i++)
     {
       Validator * validator = mValidities[i];
@@ -59,7 +59,7 @@ namespace shellanything
     }
     mValidities.clear();
 
-    // visibilities
+    // delete visibilities
     for(size_t i=0; i<mVisibilities.size(); i++)
     {
       Validator * validator = mVisibilities[i];
@@ -67,7 +67,7 @@ namespace shellanything
     }
     mVisibilities.clear();
 
-    // actions
+    // delete actions
     for(size_t i=0; i<mActions.size(); i++)
     {
       Action * action = mActions[i];
@@ -75,7 +75,7 @@ namespace shellanything
     }
     mActions.clear();
 
-    // submenus
+    // delete submenus
     for(size_t i=0; i<mSubMenus.size(); i++)
     {
       Menu * sub = mSubMenus[i];