diff --git a/drivers/filesystems/fastfat/fcb.c b/drivers/filesystems/fastfat/fcb.c
index a791c27a40..5ed1ea9c89 100644
--- a/drivers/filesystems/fastfat/fcb.c
+++ b/drivers/filesystems/fastfat/fcb.c
@@ -348,6 +348,8 @@ _vfatReleaseFCB(
 )
 {
     PVFATFCB tmpFcb;
+    ULONG RefCount;
+    PFILE_OBJECT tmpFileObject;
 
 #ifdef KDBG
     if (DebugFile.Buffer != NULL && FsRtlIsNameInExpression(&DebugFile, &pFCB->LongNameU, FALSE, NULL))
@@ -363,8 +365,6 @@ _vfatReleaseFCB(
 
     while (pFCB)
     {
-        ULONG RefCount;
-
         ASSERT(!BooleanFlagOn(pFCB->Flags, FCB_IS_FAT));
         ASSERT(pFCB != pVCB->VolumeFcb && !BooleanFlagOn(pFCB->Flags, FCB_IS_VOLUME));
         ASSERT(pFCB->RefCount > 0);
@@ -372,16 +372,15 @@ _vfatReleaseFCB(
 
         if (RefCount == 1 && BooleanFlagOn(pFCB->Flags, FCB_CACHE_INITIALIZED))
         {
-            PFILE_OBJECT tmpFileObject;
             tmpFileObject = pFCB->FileObject;
 
             pFCB->FileObject = NULL;
             CcUninitializeCacheMap(tmpFileObject, NULL, NULL);
             ClearFlag(pFCB->Flags, FCB_CACHE_INITIALIZED);
             ObDereferenceObject(tmpFileObject);
+            tmpFcb = NULL;
         }
-
-        if (RefCount == 0)
+        else if (RefCount == 0)
         {
             ASSERT(pFCB->OpenHandleCount == 0);
             tmpFcb = pFCB->parentFcb;