diff --git a/src/V3Sched.cpp b/src/V3Sched.cpp
index 44fbd6745..c5cb2d4d9 100644
--- a/src/V3Sched.cpp
+++ b/src/V3Sched.cpp
@@ -46,8 +46,8 @@
 #include "V3Stats.h"
 #include "V3UniqueNames.h"
 
-#include "unordered_map"
-#include "unordered_set"
+#include <unordered_map>
+#include <unordered_set>
 
 namespace V3Sched {