diff --git a/slirp/slirp.h b/slirp/slirp.h
index f7c087456a..4c3c672ee6 100644
--- a/slirp/slirp.h
+++ b/slirp/slirp.h
@@ -35,9 +35,6 @@ typedef char *caddr_t;
 #ifndef NO_UNIX_SOCKETS
 #include <sys/un.h>
 #endif
-#ifdef HAVE_SYS_SIGNAL_H
-# include <sys/signal.h>
-#endif
 #ifndef _WIN32
 #include <sys/socket.h>
 #endif
diff --git a/slirp/slirp_config.h b/slirp/slirp_config.h
index 3ce64e088e..2605c4222b 100644
--- a/slirp/slirp_config.h
+++ b/slirp/slirp_config.h
@@ -50,9 +50,6 @@
 #define HAVE_ARPA_INET_H
 #endif
 
-/* Define if you have sys/signal.h */
-#undef HAVE_SYS_SIGNAL_H
-
 /* Define if you have sys/stropts.h */
 #undef HAVE_SYS_STROPTS_H