Index: src/watch.c
--- src/watch.c.orig
+++ src/watch.c
@@ -47,6 +47,7 @@
 #include <locale.h>
 #include <signal.h>
 #include <sys/ioctl.h>
+#include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/wait.h>
 #include <termios.h>
@@ -136,7 +137,7 @@ static void __attribute__ ((__noreturn__)) usage(FILE 
 	fputs(USAGE_SEPARATOR, out);
 	fputs(USAGE_HELP, out);
 	fputs(_(" -v, --version  output version information and exit\n"), out);
-	fprintf(out, USAGE_MAN_TAIL("watch(1)"));
+	fprintf(out, USAGE_MAN_TAIL("gnuwatch(1)"));
 
 	exit(out == stderr ? 1 : EXIT_SUCCESS);
 }
