Index: uspace/lib/c/test/string.c
===================================================================
--- uspace/lib/c/test/string.c	(revision ea4910bfed05043e6107a7bf8389ce3e6adfcf37)
+++ uspace/lib/c/test/string.c	(revision 1743f8e4f6cec91f83c5d1bb547144cbbc03364d)
@@ -28,7 +28,6 @@
 
 /* Prevent an error from being generated */
-#undef _HELENOS_SOURCE
+#define _REALLY_WANT_STRING_H
 #include <string.h>
-#define _HELENOS_SOURCE
 #include <pcut/pcut.h>