diff --git a/public/tier1/convar.h b/public/tier1/convar.h
index 4ffaf145..767bf771 100644
--- a/public/tier1/convar.h
+++ b/public/tier1/convar.h
@@ -611,7 +611,7 @@ template <typename T>
 class CConVar;
 
 template <typename T>
-using FnTypedChangeCallback_t = void (*)(CConVar<T> *cvar, CSplitScreenSlot nSlot, const T *pNewValue, const T *pOldValue);
+using FnTypedChangeCallback_t = void(*)(CConVar<T> *cvar, CSplitScreenSlot nSlot, const T *pNewValue, const T *pOldValue);
 template <typename T>
 using FnTypedChangeCallbackProvider_t = void(*)(CConVar<T> *cvar, CSplitScreenSlot slot, const T *pNewValue, const T *pOldValue, void *__unk01, FnTypedChangeCallback_t<T> cb);
 
@@ -619,9 +619,9 @@ using FnGenericChangeCallback_t = void(*)(ConVarRefAbstract *ref, CSplitScreenSl
 using FnGenericChangeCallbackProvider_t = void(*)(ConVarRefAbstract *ref, CSplitScreenSlot nSlot, const CVValue_t *pNewValue, const CVValue_t *pOldValue, void *__unk01, FnGenericChangeCallback_t cb);
 
 template <typename T>
-using FnTypedFilterCallback_t = void (*)(CConVar<T> *cvar, CSplitScreenSlot nSlot, const T *pNewValue, const T *pOldValue);
+using FnTypedFilterCallback_t = bool(*)(CConVar<T> *cvar, CSplitScreenSlot nSlot, const T *pNewValue, const T *pOldValue);
 template <typename T>
-using FnTypedFilterCallbackProvider_t = void(*)(CConVar<T> *cvar, CSplitScreenSlot slot, const T *pNewValue, const T *pOldValue, void *__unk01, FnTypedFilterCallback_t<T> cb);
+using FnTypedFilterCallbackProvider_t = bool(*)(CConVar<T> *cvar, CSplitScreenSlot slot, const T *pNewValue, const T *pOldValue, void *__unk01, FnTypedFilterCallback_t<T> cb);
 
 using FnGenericFilterCallback_t = bool(*)(ConVarRefAbstract *ref, CSplitScreenSlot nSlot, const CVValue_t *pNewValue, const CVValue_t *pOldValue);
 using FnGenericFilterCallbackProvider_t = bool(*)(ConVarRefAbstract *ref, CSplitScreenSlot nSlot, const CVValue_t *pNewValue, const CVValue_t *pOldValue, void *__unk01, FnGenericFilterCallback_t cb);