diff --git a/reactos/ntoskrnl/include/internal/mm.h b/reactos/ntoskrnl/include/internal/mm.h
index 0b53676950a..48dba33fe4b 100644
--- a/reactos/ntoskrnl/include/internal/mm.h
+++ b/reactos/ntoskrnl/include/internal/mm.h
@@ -388,8 +388,6 @@ typedef VOID
     BOOLEAN Dirty
 );
 
-PMM_AVL_TABLE MmKernelAddressSpace;
-
 /* marea.c *******************************************************************/
 
 NTSTATUS
diff --git a/reactos/ntoskrnl/mm/mm.c b/reactos/ntoskrnl/mm/mm.c
index 890a5bb8abc..1f94452fdc1 100644
--- a/reactos/ntoskrnl/mm/mm.c
+++ b/reactos/ntoskrnl/mm/mm.c
@@ -22,6 +22,8 @@ ULONG MmReadClusterSize;
 
 MM_STATS MmStats;
 
+PMM_AVL_TABLE MmKernelAddressSpace;
+
 /* FUNCTIONS ****************************************************************/
 
 VOID