diff --git a/src/tests/add-ons/kernel/file_systems/fs_shell/sysdep.c b/src/tests/add-ons/kernel/file_systems/fs_shell/sysdep.c
index 7c3f01f6b2..ac4f909957 100644
--- a/src/tests/add-ons/kernel/file_systems/fs_shell/sysdep.c
+++ b/src/tests/add-ons/kernel/file_systems/fs_shell/sysdep.c
@@ -333,3 +333,17 @@ system_time(void)
 */  
 
 #endif  /* unix */
+
+#ifdef __BEOS__
+
+void
+dprintf(const char *format, ...)
+{
+	va_list args;
+	
+	va_start(args, format);
+	vprintf(format, args);
+	va_end(args);
+}
+
+#endif