diff --git a/reactos/hal/halarm/generic/hal.c b/reactos/hal/halarm/generic/hal.c
index 00c87636f82..06adcb7d211 100644
--- a/reactos/hal/halarm/generic/hal.c
+++ b/reactos/hal/halarm/generic/hal.c
@@ -381,10 +381,13 @@ HalInitSystem(
 
 VOID
 NTAPI
-HalInitializeProcessor(ULONG ProcessorNumber,
-                       PLOADER_PARAMETER_BLOCK LoaderBlock)
+HalInitializeProcessor(IN ULONG ProcessorNumber,
+                       IN PLOADER_PARAMETER_BLOCK LoaderBlock)
 {
-  UNIMPLEMENTED;
+    //
+    // Nothing to do
+    //
+    return;
 }