--- a/tests/mhook-test.cpp
+++ b/tests/mhook-test.cpp
@@ -121,7 +121,7 @@ ULONG WINAPI HookNtClose(HANDLE hHandle) {
 //
 
 #ifndef _MSC_VER
-int main(int argc, WCHAR* argv[])
+int main(int argc, CHAR* argv[])
 #else
 int wmain(int argc, WCHAR* argv[])
 #endif
