diff --git a/core/sys/win32/windows.odin b/core/sys/win32/windows.odin
index c2e6478d0..75283e388 100644
--- a/core/sys/win32/windows.odin
+++ b/core/sys/win32/windows.odin
@@ -1072,7 +1072,7 @@ Com_Init :: enum {
 
 @(default_calling_convention = "std")
 foreign ole32 {
-	@(link_name ="CoInitializeEx") com_init_ex :: proc(reserved: Lpvoid, co_init: Com_Init) ->Hresult ---;
+	@(link_name ="CoInitializeEx") com_init_ex :: proc(reserved: rawptr, co_init: Com_Init) ->Hresult ---;
 	@(link_name = "CoUninitialize") com_shutdown :: proc() ---;
 }