Index: /trunk/src/VBox/Runtime/common/vfs/vfsstdpipe.cpp
===================================================================
--- /trunk/src/VBox/Runtime/common/vfs/vfsstdpipe.cpp	(revision 57643)
+++ /trunk/src/VBox/Runtime/common/vfs/vfsstdpipe.cpp	(revision 57644)
@@ -95,5 +95,5 @@
     PRTVFSSTDPIPE pThis = (PRTVFSSTDPIPE)pvThis;
     int           rc;
-    AssertReturn(off < 0 || pThis->offFakePos == off, VERR_SEEK_ON_DEVICE);
+    AssertReturn(off < 0 || pThis->offFakePos == (uint64_t)off, VERR_SEEK_ON_DEVICE);
 
     NOREF(fBlocking);
@@ -149,5 +149,5 @@
     PRTVFSSTDPIPE pThis = (PRTVFSSTDPIPE)pvThis;
     int           rc;
-    AssertReturn(off < 0 || pThis->offFakePos == off, VERR_SEEK_ON_DEVICE);
+    AssertReturn(off < 0 || pThis->offFakePos == (uint64_t)off, VERR_SEEK_ON_DEVICE);
 
     if (pSgBuf->cSegs == 1)