--- a/dwm.c Fri Dec 12 19:55:03 2008 +0000 +++ b/dwm.c Sat Dec 13 16:35:34 2008 +0000 @@ -27,6 +27,7 @@ #include <stdlib.h> #include <string.h> #include <unistd.h> +#include <sys/signal.h> #include <sys/types.h> #include <sys/wait.h> #include <X11/cursorfont.h>