Index: /trunk/src/VBox/Runtime/common/filesystem/fatvfs.cpp
===================================================================
--- /trunk/src/VBox/Runtime/common/filesystem/fatvfs.cpp	(revision 66698)
+++ /trunk/src/VBox/Runtime/common/filesystem/fatvfs.cpp	(revision 66699)
@@ -4260,6 +4260,6 @@
     if (bMedia != 0)
     {
-        AssertMsgReturn(FAT_ID_IS_VALID(bMedia),       ("bMedia=%#x\n"), VERR_INVALID_PARAMETER);
-        AssertMsgReturn(FATBPB_MEDIA_IS_VALID(bMedia), ("bMedia=%#x\n"), VERR_INVALID_PARAMETER);
+        AssertMsgReturn(FAT_ID_IS_VALID(bMedia),       ("bMedia=%#x\n", bMedia), VERR_INVALID_PARAMETER);
+        AssertMsgReturn(FATBPB_MEDIA_IS_VALID(bMedia), ("bMedia=%#x\n", bMedia), VERR_INVALID_PARAMETER);
     }
     AssertReturn(!(fFlags & ~RTFSFATVOL_FMT_F_VALID_MASK), VERR_INVALID_FLAGS);