diff --git a/lib/dnscache.h b/lib/dnscache.h
index eb82eb812f..b3d9aecaf0 100644
--- a/lib/dnscache.h
+++ b/lib/dnscache.h
@@ -26,6 +26,7 @@
 #include "curl_setup.h"
 
 #include "hash.h"
+#include "curlx/timeval.h"
 
 struct addrinfo;
 struct hostent;