diff --git a/src/dnsmasq.h b/src/dnsmasq.h
index 7eb5c34..8674823 100644
--- a/src/dnsmasq.h
+++ b/src/dnsmasq.h
@@ -107,6 +107,7 @@ typedef unsigned long long u64;
 #endif
 #include <unistd.h>
 #include <stdio.h>
+#include <stdint.h>
 #include <string.h>
 #include <stdlib.h>
 #include <fcntl.h>
@@ -166,10 +167,6 @@ extern int capget(cap_user_header_t header, cap_user_data_t data);
 
 #define ADDRSTRLEN INET6_ADDRSTRLEN
 
-#ifndef UINT32_MAX
-#define UINT32_MAX 0xffffffff 
-#endif
-
 /* Async event queue */
 struct event_desc {
   int event, data, msg_sz;