diff --git a/src/net/dns/host_resolver_system_task.cc b/src/net/dns/host_resolver_system_task.cc
index d23eb59997..8d9b37db1b 100644
--- a/src/net/dns/host_resolver_system_task.cc
+++ b/src/net/dns/host_resolver_system_task.cc
@@ -45,6 +45,7 @@
 #include "net/dns/public/host_resolver_source.h"
 
 #if BUILDFLAG(IS_WIN)
+#include "base/strings/utf_string_conversions.h"
 #include "net/base/winsock_init.h"
 #endif