diff --git a/extensions/sdkhooks/extension.cpp b/extensions/sdkhooks/extension.cpp
index d9d764d62..51673da06 100644
--- a/extensions/sdkhooks/extension.cpp
+++ b/extensions/sdkhooks/extension.cpp
@@ -164,7 +164,7 @@ SH_DECL_MANUALHOOK1_void(FireBullets, 0, 0, 0, FireBulletsInfo_t const&);
 #ifdef GETMAXHEALTH_IS_VIRTUAL
 SH_DECL_MANUALHOOK0(GetMaxHealth, 0, 0, 0, int);
 #endif
-SH_DECL_MANUALHOOK0_void(GroundEntChanged, 0, 0, 0);
+SH_DECL_MANUALHOOK1_void(GroundEntChanged, 0, 0, 0, void *);
 SH_DECL_MANUALHOOK1(OnTakeDamage, 0, 0, 0, int, CTakeDamageInfoHack &);
 SH_DECL_MANUALHOOK0_void(PreThink, 0, 0, 0);
 SH_DECL_MANUALHOOK0_void(PostThink, 0, 0, 0);
@@ -1000,7 +1000,7 @@ int SDKHooks::Hook_GetMaxHealth()
 }
 #endif
 
-void SDKHooks::Hook_GroundEntChangedPost()
+void SDKHooks::Hook_GroundEntChangedPost(void *pVar)
 {
 	Call(META_IFACEPTR(CBaseEntity), SDKHook_GroundEntChangedPost);
 }
diff --git a/extensions/sdkhooks/extension.h b/extensions/sdkhooks/extension.h
index 0e8e2223b..032bd3b8a 100644
--- a/extensions/sdkhooks/extension.h
+++ b/extensions/sdkhooks/extension.h
@@ -282,7 +282,7 @@ public:
 #ifdef GETMAXHEALTH_IS_VIRTUAL
 	int Hook_GetMaxHealth();
 #endif
-	void Hook_GroundEntChangedPost();
+	void Hook_GroundEntChangedPost(void *pVar);
 	int Hook_OnTakeDamage(CTakeDamageInfoHack &info);
 	int Hook_OnTakeDamagePost(CTakeDamageInfoHack &info);
 	void Hook_PreThink();