--- a/lib/rfcnb/rfcnb-io.c
+++ b/lib/rfcnb/rfcnb-io.c
@@ -36,11 +36,11 @@
 #include "rfcnb/rfcnb-util.h"
 #include "rfcnb/std-includes.h"
 
+#include <signal.h>
 #if HAVE_STRING_H
 #include <string.h>
 #endif
 #include <sys/uio.h>
-#include <sys/signal.h>
 
 int RFCNB_Timeout = 0;          /* Timeout in seconds ... */