diff --git a/hal/halx86/legacy/bus/pcibus.c b/hal/halx86/legacy/bus/pcibus.c
index b4c0bd070df..f71142626b9 100644
--- a/hal/halx86/legacy/bus/pcibus.c
+++ b/hal/halx86/legacy/bus/pcibus.c
@@ -519,7 +519,7 @@ HalpSetPCIData(IN PBUS_HANDLER BusHandler,
     /* Update the total length read */
     return Len;
 }
-
+#ifndef _MINIHAL_
 ULONG
 NTAPI
 HalpGetPCIIntOnISABus(IN PBUS_HANDLER BusHandler,
@@ -540,6 +540,7 @@ HalpGetPCIIntOnISABus(IN PBUS_HANDLER BusHandler,
                                  Irql,
                                  Affinity);
 }
+#endif // _MINIHAL_
 
 VOID
 NTAPI
@@ -562,6 +563,7 @@ HalpPCIISALine2Pin(IN PBUS_HANDLER BusHandler,
     UNIMPLEMENTED_DBGBREAK();
 }
 
+#ifndef _MINIHAL_
 NTSTATUS
 NTAPI
 HalpGetISAFixedPCIIrq(IN PBUS_HANDLER BusHandler,
@@ -654,6 +656,7 @@ HalpRegisterPciDebuggingDeviceInfo(VOID)
     UNIMPLEMENTED_DBGBREAK("You have implemented the KD routines for searching PCI debugger"
                            "devices, but you have forgotten to implement this routine\n");
 }
+#endif // _MINIHAL_
 
 static ULONG NTAPI
 PciSize(ULONG Base, ULONG Mask)
diff --git a/hal/halx86/legacy/bussupp.c b/hal/halx86/legacy/bussupp.c
index 6e291d58479..97b535285d3 100644
--- a/hal/halx86/legacy/bussupp.c
+++ b/hal/halx86/legacy/bussupp.c
@@ -152,6 +152,7 @@ HalpAllocateBusHandler(IN INTERFACE_TYPE InterfaceType,
     return Bus;
 }
 
+#ifndef _MINIHAL_
 CODE_SEG("INIT")
 VOID
 NTAPI
@@ -225,6 +226,7 @@ HalpRegisterInternalBusHandlers(VOID)
     /* No support for EISA or MCA */
     ASSERT(HalpBusType == MACHINE_TYPE_ISA);
 }
+#endif // _MINIHAL_
 
 #ifndef _MINIHAL_
 CODE_SEG("INIT")
@@ -1230,6 +1232,7 @@ HalpInitializePciBus(VOID)
 #endif
 }
 
+#ifndef _MINIHAL_
 CODE_SEG("INIT")
 VOID
 NTAPI
@@ -1262,6 +1265,7 @@ HalpRegisterKdSupportFunctions(VOID)
     /* Register ACPI stub */
     KdCheckPowerButton = HalpCheckPowerButton;
 }
+#endif // _MINIHAL_
 
 NTSTATUS
 NTAPI
@@ -1405,6 +1409,7 @@ HaliTranslateBusAddress(IN INTERFACE_TYPE InterfaceType,
 
 /* PUBLIC FUNCTIONS **********************************************************/
 
+#ifndef _MINIHAL_
 /*
  * @implemented
  */
@@ -1430,6 +1435,7 @@ HalAdjustResourceList(IN PIO_RESOURCE_REQUIREMENTS_LIST *ResourceList)
     HalDereferenceBusHandler(Handler);
     return Status;
 }
+#endif // _MINIHAL_
 
 /*
  * @implemented
@@ -1474,6 +1480,7 @@ HalAssignSlotResources(IN PUNICODE_STRING RegistryPath,
     }
 }
 
+#ifndef _MINIHAL_
 /*
  * @implemented
  */
@@ -1493,6 +1500,7 @@ HalGetBusData(IN BUS_DATA_TYPE BusDataType,
                                  0,
                                  Length);
 }
+#endif // _MINIHAL_
 
 /*
  * @implemented
@@ -1526,6 +1534,7 @@ HalGetBusDataByOffset(IN BUS_DATA_TYPE BusDataType,
     return Status;
 }
 
+#ifndef _MINIHAL_
 /*
  * @implemented
  */
@@ -1623,6 +1632,7 @@ HalSetBusDataByOffset(IN BUS_DATA_TYPE BusDataType,
     HalDereferenceBusHandler(Handler);
     return Status;
 }
+#endif // _MINIHAL_
 
 /*
  * @implemented
diff --git a/hal/halx86/minihal/CMakeLists.txt b/hal/halx86/minihal/CMakeLists.txt
index 94a3e93112f..e8300e7bc56 100644
--- a/hal/halx86/minihal/CMakeLists.txt
+++ b/hal/halx86/minihal/CMakeLists.txt
@@ -5,7 +5,6 @@ list(APPEND MINI_HAL_SOURCE
     ../legacy/bus/cmosbus.c
     ../legacy/bus/isabus.c
     ../legacy/bus/pcibus.c
-    ../legacy/bus/sysbus.c
     ../legacy/bussupp.c
     ../generic/bios.c
     ../generic/dma.c