diff --git a/src/writer/msl/namer.cc b/src/writer/msl/namer.cc
index 43d9806..cde3032 100644
--- a/src/writer/msl/namer.cc
+++ b/src/writer/msl/namer.cc
@@ -14,6 +14,8 @@
 
 #include "src/writer/msl/namer.h"
 
+#include <algorithm>
+
 namespace tint {
 namespace writer {
 namespace msl {