diff --git a/example/Dll.c b/example/Dll.c
index 1ccccc6..845e8e3 100644
--- a/example/Dll.c
+++ b/example/Dll.c
@@ -206,6 +206,7 @@ void onUnitMorph(AIModule* module, Unit* unit) {}
 void onUnitRenegade(AIModule* module, Unit* unit) {}
 void onSaveGame(AIModule* module, const char* gameName) {}
 void onUnitComplete(AIModule* module, Unit* unit) {}
+void drop(AIModule* module) {}
 
 static AIModule_vtable module_vtable = {
     onStart,
@@ -224,7 +225,8 @@ static AIModule_vtable module_vtable = {
     onUnitMorph,
     onUnitRenegade,
     onSaveGame,
-    onUnitComplete
+    onUnitComplete,
+    drop
 };
 
 DLLEXPORT void gameInit(BWAPI_Game* game) {
diff --git a/include/AIModule.h b/include/AIModule.h
index 459e7bb..1450cb7 100644
--- a/include/AIModule.h
+++ b/include/AIModule.h
@@ -37,7 +37,7 @@ extern "C" {
 ///
 /// Example:
 ///  typedef struct MyModule {
-///   truct AIModule; // base
+///   struct AIModule; // base
 ///   int my_field;
 ///   ...
 ///  } MyModule;
@@ -49,6 +49,7 @@ typedef struct AIModule {
 
 struct AIModule_vtable
 {
+    // Game lifecycle hooks
     void (*onStart)(AIModule* module);
     void (*onEnd)(AIModule* module, bool isWinner);
     void (*onFrame)(AIModule* module);
@@ -66,6 +67,9 @@ struct AIModule_vtable
     void (*onUnitRenegade)(AIModule* module, Unit* unit);
     void (*onSaveGame)(AIModule* module, const char* gameName);
     void (*onUnitComplete)(AIModule* module, Unit* unit);
+    // Destructor
+    // It is guaranteed drop() will be called exactly once, and after all other calls
+    void (*drop)(AIModule* module);
 };
 
 /* BWAPI::AIModule* */ void* createAIModuleWrapper(AIModule* module);
diff --git a/src/AIModule.cpp b/src/AIModule.cpp
index 1976f57..970c253 100644
--- a/src/AIModule.cpp
+++ b/src/AIModule.cpp
@@ -1,6 +1,14 @@
 #include <AIModule.h>
 #include "Cast.hpp"
 
+template<typename T>
+void checkPointer(T* pointer) {
+    if (pointer == nullptr) {
+        printf("[BWAPI-C] FATAL ERROR: incorrect pointer");
+        abort();
+    }
+}
+
 class AIModuleWrapper : public BWAPI::AIModule
 {
 protected:
@@ -58,10 +66,34 @@ class AIModuleWrapper : public BWAPI::AIModule
     virtual void onUnitComplete(BWAPI::Unit unit) override {
         module->vtable->onUnitComplete(module, reinterpret_cast<Unit*>(unit));
     }
+    virtual ~AIModuleWrapper() override {
+        module->vtable->drop(module);
+    }
 
     AIModuleWrapper(::AIModule* module)
         : module(module)
     {
+        checkPointer(module);
+        checkPointer(module->vtable);
+        checkPointer(module->vtable->onStart);
+        checkPointer(module->vtable->onEnd);
+        checkPointer(module->vtable->onFrame);
+        checkPointer(module->vtable->onSendText);
+        checkPointer(module->vtable->onReceiveText);
+        checkPointer(module->vtable->onPlayerLeft);
+        checkPointer(module->vtable->onNukeDetect);
+        checkPointer(module->vtable->onUnitDiscover);
+        checkPointer(module->vtable->onUnitEvade);
+        checkPointer(module->vtable->onUnitShow);
+        checkPointer(module->vtable->onUnitHide);
+        checkPointer(module->vtable->onUnitCreate);
+        checkPointer(module->vtable->onUnitDestroy);
+        checkPointer(module->vtable->onUnitMorph);
+        checkPointer(module->vtable->onUnitRenegade);
+        checkPointer(module->vtable->onSaveGame);
+        checkPointer(module->vtable->onUnitComplete);
+        checkPointer(module->vtable->drop);
+
     }
 };