diff --git a/reactos/ntoskrnl/mm/anonmem.c b/reactos/ntoskrnl/mm/anonmem.c
index 1fd65b22107..d6d606acc03 100644
--- a/reactos/ntoskrnl/mm/anonmem.c
+++ b/reactos/ntoskrnl/mm/anonmem.c
@@ -990,7 +990,7 @@ MmQueryAnonMem(PMEMORY_AREA MemoryArea,
                PULONG ResultLength)
 {
    PMM_REGION Region;
-   PVOID RegionBase;
+   PVOID RegionBase = NULL;
 
    Info->BaseAddress = (PVOID)PAGE_ROUND_DOWN(Address);