diff --git a/reactos/ntoskrnl/mm/ARM3/contmem.c b/reactos/ntoskrnl/mm/ARM3/contmem.c
index 7c11c574a89..601ae92b12c 100644
--- a/reactos/ntoskrnl/mm/ARM3/contmem.c
+++ b/reactos/ntoskrnl/mm/ARM3/contmem.c
@@ -320,11 +320,6 @@ MiFreeContiguousMemory(IN PVOID BaseAddress)
     //
     MmUnmapIoSpace(BaseAddress, PageCount << PAGE_SHIFT);
     
-    //
-    // Lock the PFN database
-    //
-    OldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
-    
     //
     // Loop all the pages
     //
@@ -336,11 +331,6 @@ MiFreeContiguousMemory(IN PVOID BaseAddress)
         //
         MmReleasePageMemoryConsumer(MC_NPPOOL, PageFrameIndex);
     } while (++PageFrameIndex < LastPage);
-    
-    //
-    // Release the PFN lock
-    //
-    KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
 }
 
 /* PUBLIC FUNCTIONS ***********************************************************/