diff --git a/reactos/hal/halx86/mp/halinit_mp.c b/reactos/hal/halx86/mp/halinit_mp.c
index ff385393f1e..e8d80e54af5 100644
--- a/reactos/hal/halx86/mp/halinit_mp.c
+++ b/reactos/hal/halx86/mp/halinit_mp.c
@@ -22,6 +22,11 @@ ULONG_PTR KernelBase;
 
 /***************************************************************************/
 
+VOID NTAPI HalpInitializePICs(IN BOOLEAN EnableInterrupts)
+{
+    UNIMPLEMENTED;
+}
+
 VOID
 HalpInitPhase0(PLOADER_PARAMETER_BLOCK LoaderBlock)