diff --git a/rsc/shaders/mask_draw.fs b/rsc/shaders/mask_draw.fs
index 1422b26..bbcdf79 100644
--- a/rsc/shaders/mask_draw.fs
+++ b/rsc/shaders/mask_draw.fs
@@ -55,11 +55,11 @@ void main()
     vec3 color = texture(iChannel0, vertexUV).rgb; // raw color
 
     // clear
-    color += mix(vec3(0), vec3(1) - color, effect == 1);
+    color += mix(vec3(0), vec3(1) - color, int(effect == 1));
     // invert
-    color = mix(color, vec3(1) - color, effect == 2);
+    color = mix(color, vec3(1) - color, int(effect == 2));
     // step edge
-    color = mix(color, vec3(1.0 - step(dot(color, vec3(1.0/3.0)), 0.6)), effect == 3);
+    color = mix(color, vec3(1.0 - step(dot(color, vec3(1.0/3.0)), 0.6)), int(effect == 3));
 
     if ( option > 0 ) {
 
diff --git a/tinyxml2Toolkit.h b/tinyxml2Toolkit.h
index bc67424..5342bdb 100644
--- a/tinyxml2Toolkit.h
+++ b/tinyxml2Toolkit.h
@@ -2,6 +2,10 @@
 #define TINYXML2TOOLKIT_H
 
 #include <string>
+#ifdef __APPLE__
+#include <sys/types.h>
+#endif
+
 #include <glm/glm.hpp>
 
 namespace tinyxml2 {