diff --git a/reactos/hal/halx86/mp/processor_mp.c b/reactos/hal/halx86/mp/processor_mp.c
index a8ea3f87575..82fe5856a05 100644
--- a/reactos/hal/halx86/mp/processor_mp.c
+++ b/reactos/hal/halx86/mp/processor_mp.c
@@ -22,7 +22,7 @@
 
 VOID STDCALL
 HalInitializeProcessor(ULONG ProcessorNumber,
-		       PVOID /*PLOADER_PARAMETER_BLOCK*/ LoaderBlock)
+                       PLOADER_PARAMETER_BLOCK LoaderBlock)
 {
    ULONG CPU;