diff --git a/reactos/drivers/bus/acpi/CMakeLists.txt b/reactos/drivers/bus/acpi/CMakeLists.txt
index 1793c66bf8c..05ac856d11e 100644
--- a/reactos/drivers/bus/acpi/CMakeLists.txt
+++ b/reactos/drivers/bus/acpi/CMakeLists.txt
@@ -121,7 +121,6 @@ add_library(acpica
     acpica/utilities/uttrack.c
     acpica/utilities/utxface.c)
 
-set_target_properties(acpica PROPERTIES COMPILE_DEFINITIONS "ACPI_USE_LOCAL_CACHE")
 add_dependencies(acpica bugcodes)
 
 add_library(acpi SHARED
diff --git a/reactos/drivers/bus/acpi/acpica/acpica.rbuild b/reactos/drivers/bus/acpi/acpica/acpica.rbuild
index ce6fee8791f..719e125c76e 100644
--- a/reactos/drivers/bus/acpi/acpica/acpica.rbuild
+++ b/reactos/drivers/bus/acpi/acpica/acpica.rbuild
@@ -1,7 +1,6 @@
 <?xml version="1.0"?>
 <!DOCTYPE module SYSTEM "../../../tools/rbuild/project.dtd">
 <module name="acpica" type="staticlibrary" allowwarnings="true">
-	<define name="ACPI_USE_LOCAL_CACHE"/>
 	<include base="acpica">include</include>
 	<directory name="dispatcher">
 		<file>dsfield.c</file>
diff --git a/reactos/drivers/bus/acpi/osl.c b/reactos/drivers/bus/acpi/osl.c
index 4eeb71f8f51..a4c47ceb8dc 100644
--- a/reactos/drivers/bus/acpi/osl.c
+++ b/reactos/drivers/bus/acpi/osl.c
@@ -149,19 +149,6 @@ AcpiOsFree(void *ptr)
 
 #ifndef ACPI_USE_LOCAL_CACHE
 
-void*
-AcpiOsAcquireObjectHelper (
-    POOL_TYPE PoolType,
-    SIZE_T NumberOfBytes,
-    ULONG Tag)
-{
-    void* Alloc = ExAllocatePool(PoolType, NumberOfBytes);
-
-    /* acpica expects memory allocated from cache to be zeroed */
-    RtlZeroMemory(Alloc,NumberOfBytes);
-    return Alloc;
-}
-
 ACPI_STATUS
 AcpiOsCreateCache (
     char                    *CacheName,
@@ -173,7 +160,7 @@ AcpiOsCreateCache (
         ExAllocatePool(NonPagedPool,sizeof(NPAGED_LOOKASIDE_LIST));
 
     ExInitializeNPagedLookasideList(Lookaside,
-        (PALLOCATE_FUNCTION)AcpiOsAcquireObjectHelper,// custom memory allocator
+        NULL,
         NULL,
         0,
         ObjectSize,
@@ -283,7 +270,7 @@ AcpiOsInstallInterruptHandler (
         Internal,
         0,
         InterruptNumber,
-        0,
+        InterruptNumber,
         &DIrql,
         &Affinity);