diff --git a/src/util-inl.h b/src/util-inl.h
index 5f8e7acb2a8e52..25c0ddc7dd59f5 100644
--- a/src/util-inl.h
+++ b/src/util-inl.h
@@ -24,6 +24,7 @@
 
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
+#include <cmath>
 #include <cstring>
 #include "util.h"