diff --git a/reactos/drivers/filesystems/fs_rec/ext2.c b/reactos/drivers/filesystems/fs_rec/ext2.c
index 78e0a18ef6a..46a6f43a42e 100644
--- a/reactos/drivers/filesystems/fs_rec/ext2.c
+++ b/reactos/drivers/filesystems/fs_rec/ext2.c
@@ -18,6 +18,7 @@ BOOLEAN
 NTAPI
 FsRecIsExt2Volume(IN PVOID PackedBootSector)
 {
+    UNREFERENCED_PARAMETER(PackedBootSector);
     /* For now, always return failure... */
     return FALSE;
 }
diff --git a/reactos/drivers/filesystems/fs_rec/fs_rec.c b/reactos/drivers/filesystems/fs_rec/fs_rec.c
index a74d808b4d3..a12d6bfd8b9 100644
--- a/reactos/drivers/filesystems/fs_rec/fs_rec.c
+++ b/reactos/drivers/filesystems/fs_rec/fs_rec.c
@@ -84,6 +84,8 @@ FsRecCreate(IN PDEVICE_OBJECT DeviceObject,
     NTSTATUS Status;
     PAGED_CODE();
 
+    UNREFERENCED_PARAMETER(DeviceObject);
+
     /* Make sure we have a file name */
     if (IoStack->FileObject->FileName.Length)
     {
@@ -111,6 +113,8 @@ FsRecClose(IN PDEVICE_OBJECT DeviceObject,
 {
     PAGED_CODE();
 
+    UNREFERENCED_PARAMETER(DeviceObject);
+
     /* Just complete the IRP and return success */
     IoCompleteRequest(Irp, IO_NO_INCREMENT);
     return STATUS_SUCCESS;
@@ -296,6 +300,8 @@ DriverEntry(IN PDRIVER_OBJECT DriverObject,
     PDEVICE_OBJECT UdfsObject;
     PAGED_CODE();
 
+    UNREFERENCED_PARAMETER(RegistryPath);
+
     /* Page the entire driver */
     MmPageEntireDriver(DriverEntry);
 
diff --git a/reactos/drivers/filesystems/fs_rec/ntfs.c b/reactos/drivers/filesystems/fs_rec/ntfs.c
index bc09a3df571..11ae4c74b53 100644
--- a/reactos/drivers/filesystems/fs_rec/ntfs.c
+++ b/reactos/drivers/filesystems/fs_rec/ntfs.c
@@ -24,6 +24,9 @@ FsRecIsNtfsVolume(IN PPACKED_BOOT_SECTOR BootSector,
     /* Assume failure */
     BOOLEAN Result = FALSE;
 
+    UNREFERENCED_PARAMETER(BytesPerSector);
+    UNREFERENCED_PARAMETER(NumberOfSectors);
+
     PAGED_CODE();
 
     if ((BootSector->Oem[0] == 'N') &&