diff --git a/src/maploader/maploader.cpp b/src/maploader/maploader.cpp
index d4a35c20d8..b97e08897a 100644
--- a/src/maploader/maploader.cpp
+++ b/src/maploader/maploader.cpp
@@ -59,6 +59,7 @@
 
 
 #include <math.h>
+#include <cmath>	// needed for std::floor on mac
 #include "maploader.h"
 #include "c_cvars.h"
 #include "actor.h"
diff --git a/src/rendering/hwrenderer/scene/hw_spritelight.cpp b/src/rendering/hwrenderer/scene/hw_spritelight.cpp
index 56ef280da3..f9998398aa 100644
--- a/src/rendering/hwrenderer/scene/hw_spritelight.cpp
+++ b/src/rendering/hwrenderer/scene/hw_spritelight.cpp
@@ -37,6 +37,7 @@
 #include "hwrenderer/scene/hw_drawinfo.h"
 #include "hwrenderer/scene/hw_drawstructs.h"
 #include "models.h"
+#include <cmath>	// needed for std::floor on mac
 
 template<class T>
 T smoothstep(const T edge0, const T edge1, const T x)