diff --git a/external/cubicvr2/math/mat3.h b/external/cubicvr2/math/mat3.h
index e96b0db..8f5ab22 100644
--- a/external/cubicvr2/math/mat3.h
+++ b/external/cubicvr2/math/mat3.h
@@ -23,7 +23,9 @@ namespace CubicVR {
         __float a,b,c,d,e,f,g,h,i;
 
         //        __float  operator [] (unsigned i) const { return ((__float *)this)[i]; }
+#ifndef _WIN32
         __float& operator [] (unsigned i)       { return ((__float *)this)[i]; }
+#endif
         operator __float*() const { return (__float *)this; }
         
         mat3(__float ai,__float bi,__float ci,__float di,__float ei,__float fi,__float gi,__float hi,__float ii) {
diff --git a/external/cubicvr2/math/mat4.h b/external/cubicvr2/math/mat4.h
index b46409c..0059cd8 100644
--- a/external/cubicvr2/math/mat4.h
+++ b/external/cubicvr2/math/mat4.h
@@ -25,7 +25,10 @@ namespace CubicVR {
         __float a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p;
 
         //        __float  operator [] (unsigned i) const { return ((__float *)this)[i]; }
+#ifndef _WIN32
         __float& operator [] (unsigned i)       { return ((__float *)this)[i]; }
+#endif
+
         operator __float*() const { return (__float *)this; }
         mat4(__float ai,__float bi,__float ci,__float di,__float ei,__float fi,__float gi,__float hi,__float ii,__float ji,__float ki,__float li,__float mi,__float ni,__float oi,__float pi) {
             a = ai; b = bi; c = ci; d = di; e = ei; f = fi; g = gi; h = hi; i = ii; j = ji; k = ki; l = li; m = mi; n = ni; o = oi; p = pi;
diff --git a/external/cubicvr2/math/vec2.h b/external/cubicvr2/math/vec2.h
index d7a7aad..24011c7 100644
--- a/external/cubicvr2/math/vec2.h
+++ b/external/cubicvr2/math/vec2.h
@@ -25,8 +25,9 @@ namespace CubicVR {
         __float& v() { return y; }
         
 //        __float  operator [] (unsigned i) const { return ((__float *)this)[i]; }
-        __float& operator [] (unsigned i)       { return ((__float *)this)[i]; }
-        
+#ifndef _WIN32
+		__float& operator [] (unsigned i)       { return ((__float *)this)[i]; }
+#endif        
         vec2 (__float xi,__float yi) { x = xi; y = yi;  }
         vec2 () { x = y = 0.0f; }
         
diff --git a/external/cubicvr2/math/vec3.h b/external/cubicvr2/math/vec3.h
index 9dcdca6..220bf60 100644
--- a/external/cubicvr2/math/vec3.h
+++ b/external/cubicvr2/math/vec3.h
@@ -29,7 +29,9 @@ namespace CubicVR {
         __float& g() { return y; }
         __float& b() { return z; }
         
+#ifndef _WIN32
         __float& operator [] (unsigned i)       { return ((__float *)this)[i]; }
+#endif
         vec3 (__float xi,__float yi,__float zi) { x = xi; y = yi; z = zi; }
         vec3 () { x = y = z = 0.0f; }
         
diff --git a/external/cubicvr2/math/vec4.h b/external/cubicvr2/math/vec4.h
index 5975079..ad795c1 100644
--- a/external/cubicvr2/math/vec4.h
+++ b/external/cubicvr2/math/vec4.h
@@ -28,8 +28,10 @@ namespace CubicVR {
         __float& a() { return w; }
         
 //        __float  operator [] (unsigned i) const { return ((__float *)this)[i]; }
+#ifndef _WIN32
         __float& operator [] (unsigned i)       { return ((__float *)this)[i]; }
-        
+#endif
+
         vec4 (__float xi,__float yi,__float zi,__float wi) { x = xi; y = yi; z = zi; w = wi; }
         vec4 () { x = y = z = w =  0.0f; }