diff --git a/extensions/sdktools/hooks.cpp b/extensions/sdktools/hooks.cpp
index 79094702b3..706b478d69 100644
--- a/extensions/sdktools/hooks.cpp
+++ b/extensions/sdktools/hooks.cpp
@@ -234,7 +234,7 @@ void CHookManager::OnClientConnected(int client)
 		}
 	}
 	
-	int hookid = SH_ADD_VPHOOK(IClientMessageHandler, ProcessVoiceData, (IClientMessageHandler *)((intptr_t)(pClient) + 4), SH_MEMBER(this, &CHookManager::ProcessVoiceData), true);
+	int hookid = SH_ADD_VPHOOK(IClientMessageHandler, ProcessVoiceData, (IClientMessageHandler *)((intptr_t)(pClient) + sizeof(void *)), SH_MEMBER(this, &CHookManager::ProcessVoiceData), true);
 	hook.SetHookID(hookid);
 	netProcessVoiceData.push_back(new CVTableHook(hook));
 }
@@ -584,7 +584,7 @@ bool CHookManager::SendFile(const char *filename, unsigned int transferID)
 #if !defined CLIENTVOICE_HOOK_SUPPORT
 bool CHookManager::ProcessVoiceData(CLC_VoiceData *msg)
 {
-	IClient *pClient = (IClient *)((intptr_t)(META_IFACEPTR(IClient)) - 4);
+	IClient *pClient = (IClient *)((intptr_t)(META_IFACEPTR(IClient)) - sizeof(void *));
 	if (pClient == NULL)
 	{
 		return true;
diff --git a/extensions/sdktools/vhelpers.cpp b/extensions/sdktools/vhelpers.cpp
index 7d5c5545d0..0dfbc08c8a 100644
--- a/extensions/sdktools/vhelpers.cpp
+++ b/extensions/sdktools/vhelpers.cpp
@@ -753,8 +753,8 @@ CEntityFactoryDictionary *GetEntityFactoryDictionary()
 			int32_t funcOffset = *(int32_t *)((intptr_t)addr + offset);
 
 			// Get real address of function
-			// Address of signature + offset of relative offset + sizeof(int32_t) offset + relative offset
-			addr = (void *)((intptr_t)addr + offset + 4 + funcOffset);
+			// Address of signature + offset of relative offset + pointer size + relative offset
+			addr = (void *)((intptr_t)addr + offset + sizeof(void *) + funcOffset);
 		}
 
 		pWrapper = g_pBinTools->CreateCall(addr, CallConv_Cdecl, &retData, NULL, 0);