diff --git a/reactos/include/ddk/ntifs.h b/reactos/include/ddk/ntifs.h
index 0cdd2bf129c..cfddcc39504 100644
--- a/reactos/include/ddk/ntifs.h
+++ b/reactos/include/ddk/ntifs.h
@@ -3128,7 +3128,7 @@ FsRtlFastCheckLockForRead (
     IN PLARGE_INTEGER       Length,
     IN ULONG                Key,
     IN PFILE_OBJECT         FileObject,
-    IN PEPROCESS            Process
+    IN PVOID                Process
 );
 
 NTKERNELAPI
@@ -3140,7 +3140,7 @@ FsRtlFastCheckLockForWrite (
     IN PLARGE_INTEGER       Length,
     IN ULONG                Key,
     IN PFILE_OBJECT         FileObject,
-    IN PEPROCESS            Process
+    IN PVOID                Process
 );
 
 #define FsRtlFastLock(A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11) (       \
diff --git a/reactos/ntoskrnl/fsrtl/filelock.c b/reactos/ntoskrnl/fsrtl/filelock.c
index 8e28eb48859..43f0377b580 100644
--- a/reactos/ntoskrnl/fsrtl/filelock.c
+++ b/reactos/ntoskrnl/fsrtl/filelock.c
@@ -141,7 +141,7 @@ FsRtlFastCheckLockForRead(IN PFILE_LOCK FileLock,
                           IN PLARGE_INTEGER Length,
                           IN ULONG Key,
                           IN PFILE_OBJECT FileObject,
-                          IN PEPROCESS Process)
+                          IN PVOID Process)
 {
     KeBugCheck(FILE_SYSTEM);
     return FALSE;
@@ -157,7 +157,7 @@ FsRtlFastCheckLockForWrite(IN PFILE_LOCK FileLock,
                            IN PLARGE_INTEGER Length,
                            IN ULONG Key,
                            IN PFILE_OBJECT FileObject,
-                           IN PEPROCESS Process)
+                           IN PVOID Process)
 {
     KeBugCheck(FILE_SYSTEM);
     return FALSE;