diff --git a/headers/private/userlandfs/shared/Compatibility.h b/headers/private/userlandfs/shared/Compatibility.h
index 4059d0d356..62c09d8b85 100644
--- a/headers/private/userlandfs/shared/Compatibility.h
+++ b/headers/private/userlandfs/shared/Compatibility.h
@@ -1,17 +1,17 @@
 // Compatibility.h
-// 
+//
 // Copyright (c) 2004, Ingo Weinhold (bonefish@cs.tu-berlin.de)
-// 
+//
 // Permission is hereby granted, free of charge, to any person obtaining a
 // copy of this software and associated documentation files (the "Software"),
-// to deal in the Software without restriction, including without limitation 
+// to deal in the Software without restriction, including without limitation
 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
 // and/or sell copies of the Software, and to permit persons to whom the
 // Software is furnished to do so, subject to the following conditions:
-// 
+//
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
-// 
+//
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
@@ -19,7 +19,7 @@
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
-// 
+//
 // Except as contained in this notice, the name of a copyright holder shall
 // not be used in advertising or otherwise to promote the sale, use or other
 // dealings in this Software without prior written authorization of the
@@ -29,6 +29,8 @@
 #define USERLAND_FS_COMPATIBILITY_H
 
 #include <BeBuild.h>
+#include <Errors.h>
+
 
 #if B_BEOS_VERSION <= B_BEOS_VERSION_5
 //#	define B_BAD_DATA -2147483632L