diff --git a/slirp/Makefile.objs b/slirp/Makefile.objs
index 69e140f965..e91daf0e91 100644
--- a/slirp/Makefile.objs
+++ b/slirp/Makefile.objs
@@ -33,4 +33,4 @@ slirp.mo-objs = \
 	vmstate.o \
 	$(NULL)
 
-slirp.mo-cflags = -DG_LOG_DOMAIN=\"Slirp\" -DWITH_QEMU
+slirp.mo-cflags = -DG_LOG_DOMAIN=\"Slirp\"
diff --git a/slirp/util.c b/slirp/util.c
index 1cbaa26b60..5ec2fa87ab 100644
--- a/slirp/util.c
+++ b/slirp/util.c
@@ -31,8 +31,8 @@
 #include <fcntl.h>
 #include <stdint.h>
 
-#if defined(_WIN32) && !defined(WITH_QEMU)
-int inet_aton(const char *cp, struct in_addr *ia)
+#if defined(_WIN32)
+int slirp_inet_aton(const char *cp, struct in_addr *ia)
 {
     uint32_t addr = inet_addr(cp);
     if (addr == 0xffffffff) {
diff --git a/slirp/util.h b/slirp/util.h
index c4207a49d6..e94ee4e7f1 100644
--- a/slirp/util.h
+++ b/slirp/util.h
@@ -138,8 +138,8 @@ int slirp_getsockopt_wrap(int sockfd, int level, int optname,
 #define setsockopt slirp_setsockopt_wrap
 int slirp_setsockopt_wrap(int sockfd, int level, int optname,
                           const void *optval, int optlen);
-
-int inet_aton(const char *cp, struct in_addr *ia);
+#define inet_aton slirp_inet_aton
+int slirp_inet_aton(const char *cp, struct in_addr *ia);
 #else
 #define closesocket(s) close(s)
 #define ioctlsocket(s, r, v) ioctl(s, r, v)