diff --git a/lib/vquic/curl_quiche.c b/lib/vquic/curl_quiche.c
index f225667811..179ccf8aa1 100644
--- a/lib/vquic/curl_quiche.c
+++ b/lib/vquic/curl_quiche.c
@@ -40,6 +40,7 @@
 #include "../connect.h"
 #include "../progress.h"
 #include "../strerror.h"
+#include "../select.h"
 #include "../http1.h"
 #include "vquic.h"
 #include "vquic_int.h"