diff --git a/drivers/filesystems/fastfat_new/dirsup.c b/drivers/filesystems/fastfat_new/dirsup.c
index 71689e8d902..8ca1f6ad532 100644
--- a/drivers/filesystems/fastfat_new/dirsup.c
+++ b/drivers/filesystems/fastfat_new/dirsup.c
@@ -1991,7 +1991,11 @@ Return Value:
     ULONG ByteOffset;
     PDIRENT Dirent;
 
+#ifndef __REACTOS__
     BOOLEAN IsDirectoryEmpty;
+#else
+    BOOLEAN IsDirectoryEmpty = FALSE;
+#endif
 
     NTSTATUS Status;
 
diff --git a/drivers/filesystems/fastfat_new/fatdata.h b/drivers/filesystems/fastfat_new/fatdata.h
index 0d0493f4e7d..4d8aa2eeeb7 100644
--- a/drivers/filesystems/fastfat_new/fatdata.h
+++ b/drivers/filesystems/fastfat_new/fatdata.h
@@ -243,7 +243,7 @@ extern LONG FatDebugTraceIndent;
 }
 
 #define DebugUnwind(X) {                                                      \
-    if (AbnormalTermination()) {                                             \
+    if (_SEH2_AbnormalTermination()) {                                        \
         DebugTrace(0, DEBUG_TRACE_UNWIND, #X ", Abnormal termination.\n", 0); \
     }                                                                         \
 }
diff --git a/drivers/filesystems/fastfat_new/pnp.c b/drivers/filesystems/fastfat_new/pnp.c
index 9604a961e8b..26a9ed533f8 100644
--- a/drivers/filesystems/fastfat_new/pnp.c
+++ b/drivers/filesystems/fastfat_new/pnp.c
@@ -22,6 +22,10 @@ Abstract:
 
 #define BugCheckFileId                   (FAT_BUG_CHECK_PNP)
 
+#ifdef __REACTOS__
+#define Dbg                              (DEBUG_TRACE_PNP)
+#endif
+
 NTSTATUS
 FatPnpQueryRemove (
     PIRP_CONTEXT IrpContext,