diff --git a/src/system/libroot/posix/locale/setlocale.c b/src/system/libroot/posix/locale/setlocale.c
index 4dea430f1e..1717421bba 100644
--- a/src/system/libroot/posix/locale/setlocale.c
+++ b/src/system/libroot/posix/locale/setlocale.c
@@ -1,7 +1,7 @@
 /*
-** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
-** Distributed under the terms of the Haiku License.
-*/
+ * Copyright 2004-2006, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
+ * Distributed under the terms of the MIT License.
+ */
 
 
 #include <locale.h>
@@ -11,6 +11,9 @@
 char *
 setlocale(int category, const char *locale)
 {
+	if (locale == NULL)
+		return "C";
+
 	// ToDo: this should check if liblocale.so is available and use its functions
 	return NULL;
 }