diff --git a/reactos/include/rosrtl/sparse.h b/reactos/include/rosrtl/sparse.h
index a0f27e21345..2a5cd987806 100644
--- a/reactos/include/rosrtl/sparse.h
+++ b/reactos/include/rosrtl/sparse.h
@@ -1,4 +1,4 @@
-/* $Id: sparse.h,v 1.1 2004/09/15 18:57:01 weiden Exp $
+/* $Id: sparse.h,v 1.2 2004/09/15 19:01:23 weiden Exp $
  */
 
 #ifndef ROSRTL_SPARSE_H__
@@ -19,6 +19,14 @@ ZeroFileData(HANDLE hFile,
              PLARGE_INTEGER pliFileOffset,
              PLARGE_INTEGER pliBeyondFinalZero);
 
+DWORD
+STDCALL
+QueryAllocatedFileRanges(HANDLE hFile,
+                         PLARGE_INTEGER pliFileOffset,
+                         PLARGE_INTEGER pliLength,
+                         PFILE_ALLOCATED_RANGE_BUFFER lpAllocatedRanges,
+                         DWORD dwBufferSize);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/reactos/lib/rosrtl/file/sparse.c b/reactos/lib/rosrtl/file/sparse.c
index 1228e3ff6a2..4cffa41279e 100644
--- a/reactos/lib/rosrtl/file/sparse.c
+++ b/reactos/lib/rosrtl/file/sparse.c
@@ -105,7 +105,7 @@ QueryAllocatedFileRanges(HANDLE hFile,
                      lpAllocatedRanges,
                      dwBufferSize,
                      &BytesRet,
-                      NULL))
+                     NULL) != 0)
   {
     return BytesRet;
   }