diff --git a/reapi/src/hook_callback.h b/reapi/src/hook_callback.h
index a6a6863..7ea9990 100644
--- a/reapi/src/hook_callback.h
+++ b/reapi/src/hook_callback.h
@@ -53,6 +53,7 @@ inline bool hasStringArgs() { return false; }
 template <typename T, typename ...f_args>
 bool hasStringArgs(T, f_args... args)
 {
+	if (sizeof(T) > sizeof(int)) UTIL_SysError("%s: invalid hookchain argument size (%i > %i)", __FUNCTION__, sizeof(T), sizeof(int));
 	if (getApiType(T()) == ATYPE_STRING) return true;
 	return hasStringArgs(args...);
 }
@@ -257,7 +258,7 @@ template <typename R, typename original_t, typename ...f_args>
 R callForward(size_t func, original_t original, f_args... args)
 {
 	if (sizeof(R) > sizeof(int)) {
-		UTIL_SysError("%s: invalid return type size (%i)", __FUNCTION__, sizeof(R));
+		UTIL_SysError("%s: invalid return type size (%i > %i)", __FUNCTION__, sizeof(R), sizeof(int));
 	}
 
 	hookctx_t hookCtx(sizeof...(args), args...);
diff --git a/reapi/src/member_list.cpp b/reapi/src/member_list.cpp
index 31ed8a5..b98c441 100644
--- a/reapi/src/member_list.cpp
+++ b/reapi/src/member_list.cpp
@@ -738,7 +738,7 @@ memberlist_t memberlist;
 
 member_t *memberlist_t::operator[](size_t members) const
 {
-	#define CASE(h)	case mt_##h: if (index < arraysize(memberlist_##h)) return &memberlist_##h[index]; else break;
+	#define CASE(h)	case mt_##h: if (likely(index < arraysize(memberlist_##h))) return &memberlist_##h[index]; else break;
 
 	const auto table = members_tables_e(members / MAX_REGION_RANGE);
 	const auto index = members & (MAX_REGION_RANGE - 1);
diff --git a/reapi/src/reapi_utils.h b/reapi/src/reapi_utils.h
index 5793cf4..c8564d2 100644
--- a/reapi/src/reapi_utils.h
+++ b/reapi/src/reapi_utils.h
@@ -51,14 +51,20 @@ inline edict_t* edictByIndex(int index)
 }
 
 template<typename T>
-T* getPrivate(int index)
+inline T* getPrivate(int index)
 {
-	return (T *)GET_PRIVATE(edictByIndexAmx(index));
+	T* pdata = nullptr;
+	if (likely(index >= 0))
+		pdata = (T *)g_pEdicts[index].pvPrivateData;
+	return pdata;
 }
 
 inline entvars_t* PEV(int index)
 {
-	return VARS(edictByIndexAmx(index));
+	entvars_t* pvars = nullptr;
+	if (likely(index >= 0))
+		pvars = &g_pEdicts[index].v;
+	return pvars;
 }
 
 // HLTypeConversion.h -> AMXModX