diff --git a/include/rew/config.h b/include/rew/config.h
index 7813ae8b316d13e04ce6b5d1b9fe6db77f9309cb..b6e45f23002e23fdd7beb6bd00b357b1ce0c91e2 100644
--- a/include/rew/config.h
+++ b/include/rew/config.h
@@ -73,6 +73,7 @@
 #include <cstring>
 #include <iostream>
 #include <memory>
+#include <cmath>
 
 #ifndef RAD_TO_DEG
 #define RAD_TO_DEG  57.2957795131