diff --git a/lib/util/BVutil.cpp b/lib/util/BVutil.cpp
index 9d0dd82bc46..b639ea3939c 100644
--- a/lib/util/BVutil.cpp
+++ b/lib/util/BVutil.cpp
@@ -1,4 +1,5 @@
 #include <iostream>
+#include <math.h>
 extern "C" {
 #include <libqhull/qhull_a.h>
 }