Index: libcfa/src/bits/signal.hfa
===================================================================
--- libcfa/src/bits/signal.hfa	(revision a3821fa7cd1cd775ef0f5213a7acc97154de0d95)
+++ libcfa/src/bits/signal.hfa	(revision 43784ac7ca1579ca19d7dc8bc4e1423986fd4d97)
@@ -20,7 +20,5 @@
 
 #include <errno.h>
-#define __USE_GNU
 #include <signal.h>
-#undef __USE_GNU
 #include <stdlib.h>
 #include <string.h>