diff --git a/PWGEM/PhotonMeson/Core/EMCPhotonCut.h b/PWGEM/PhotonMeson/Core/EMCPhotonCut.h
index 1e3ac74f6cd..8719fa83626 100644
--- a/PWGEM/PhotonMeson/Core/EMCPhotonCut.h
+++ b/PWGEM/PhotonMeson/Core/EMCPhotonCut.h
@@ -20,6 +20,7 @@
 
 #include <Rtypes.h>
 
+#include <cmath>
 #include <functional>
 #include <string>