diff --git a/src/net/dns/host_resolver_system_task.cc b/src/net/dns/host_resolver_system_task.cc
index 3aa59ba676..9ebae04715 100644
--- a/src/net/dns/host_resolver_system_task.cc
+++ b/src/net/dns/host_resolver_system_task.cc
@@ -44,6 +44,7 @@
 #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