diff --git a/headers/build/os/support/Errors.h b/headers/build/os/support/Errors.h
index 5184484403..75d630c29b 100644
--- a/headers/build/os/support/Errors.h
+++ b/headers/build/os/support/Errors.h
@@ -408,6 +408,7 @@ extern "C" {
 #endif
 
 extern int *_haiku_build_errno();
+extern int _haiku_to_host_error(int error);
 
 #ifdef __cplusplus
 }
diff --git a/headers/private/fs_shell/fssh_errno.h b/headers/private/fs_shell/fssh_errno.h
index 2bfa252304..890da56e2b 100644
--- a/headers/private/fs_shell/fssh_errno.h
+++ b/headers/private/fs_shell/fssh_errno.h
@@ -17,6 +17,7 @@ extern int *_fssh_errnop(void);
 extern int	fssh_get_errno(void);
 extern void	fssh_set_errno(int error);
 
+extern int	fssh_to_host_error(int error);
 
 #ifdef __cplusplus
 } /* "C" */
diff --git a/src/build/libroot/errors.cpp b/src/build/libroot/errors.cpp
index 1b6c548937..30871dbbaf 100644
--- a/src/build/libroot/errors.cpp
+++ b/src/build/libroot/errors.cpp
@@ -180,3 +180,9 @@ _haiku_build_errno()
 	return &localErrno;
 }
 
+// _haiku_to_host_error
+int
+_haiku_to_host_error(int error)
+{
+	return to_host_error(error);
+}
diff --git a/src/tools/fs_shell/errno.cpp b/src/tools/fs_shell/errno.cpp
index 835da29799..36802bfc87 100644
--- a/src/tools/fs_shell/errno.cpp
+++ b/src/tools/fs_shell/errno.cpp
@@ -29,3 +29,13 @@ fssh_set_errno(int error)
 {
 	errno = error;
 }
+
+int
+fssh_to_host_error(int error)
+{
+	#if __BEOS__
+		return error;
+	#else
+		return _haiku_to_host_error(error);
+	#endif
+}