diff --git a/libs/video/renderer/gl/gl_sky.c b/libs/video/renderer/gl/gl_sky.c
index 210e4ef25..a4d325f09 100644
--- a/libs/video/renderer/gl/gl_sky.c
+++ b/libs/video/renderer/gl/gl_sky.c
@@ -55,6 +55,9 @@
 #include "compat.h"
 #include "r_internal.h"
 
+// Note that the cube face names are from the perspective of looking at the
+// cube from the outside on the -ve y axis with +x to the right, +y going in,
+// +z up, and front is the nearest face.
 static const char *suf[6] = { "rt", "bk", "lf", "ft", "up", "dn" };
 int         gl_solidskytexture;
 int         gl_alphaskytexture;
@@ -65,46 +68,46 @@ qboolean    gl_skyloaded = false;
 
 vec5_t      gl_skyvec[6][4] = {
 	{
-		// right +y
-		{1, 0, 1024, 1024, 1024},
-		{1, 1, 1024, 1024, -1024},
-		{0, 1, -1024, 1024, -1024},
-		{0, 0, -1024, 1024, 1024}
+		// right +x
+		{0, 0,  1024,  1024,  1024},
+		{0, 1,  1024,  1024, -1024},
+		{1, 1,  1024, -1024, -1024},
+		{1, 0,  1024, -1024,  1024}
 	},
 	{
-		// back -x
-		{1, 0, -1024, 1024, 1024},
-		{1, 1, -1024, 1024, -1024},
+		// back +y
+		{0, 0, -1024,  1024,  1024},
+		{0, 1, -1024,  1024, -1024},
+		{1, 1,  1024,  1024, -1024},
+		{1, 0,  1024,  1024,  1024}
+	},
+	{
+		// left -x
+		{0, 0, -1024, -1024,  1024},
 		{0, 1, -1024, -1024, -1024},
-		{0, 0, -1024, -1024, 1024}
+		{1, 1, -1024,  1024, -1024},
+		{1, 0, -1024,  1024,  1024}
 	},
 	{
-		// left -y
-		{1, 0, -1024, -1024, 1024},
+		// front -y
+		{0, 0,  1024, -1024,  1024},
+		{0, 1,  1024, -1024, -1024},
 		{1, 1, -1024, -1024, -1024},
-		{0, 1, 1024, -1024, -1024},
-		{0, 0, 1024, -1024, 1024}
-	},
-	{
-		// front +x
-		{1, 0, 1024, -1024, 1024},
-		{1, 1, 1024, -1024, -1024},
-		{0, 1, 1024, 1024, -1024},
-		{0, 0, 1024, 1024, 1024}
+		{1, 0, -1024, -1024,  1024}
 	},
 	{
 		// up +z
-		{1, 0, 1024, -1024, 1024},
-		{1, 1, 1024, 1024, 1024},
-		{0, 1, -1024, 1024, 1024},
-		{0, 0, -1024, -1024, 1024}
+		{0, 0, -1024,  1024,  1024},
+		{0, 1,  1024,  1024,  1024},
+		{1, 1,  1024, -1024,  1024},
+		{1, 0, -1024, -1024,  1024}
 	},
 	{
 		// down -z
-		{1, 0, 1024, 1024, -1024},
-		{1, 1, 1024, -1024, -1024},
-		{0, 1, -1024, -1024, -1024},
-		{0, 0, -1024, 1024, -1024}
+		{0, 0,  1024,  1024, -1024},
+		{0, 1, -1024,  1024, -1024},
+		{1, 1, -1024, -1024, -1024},
+		{1, 0,  1024, -1024, -1024}
 	}
 };
 
diff --git a/libs/video/renderer/gl/gl_sky_clip.c b/libs/video/renderer/gl/gl_sky_clip.c
index 3ab792c2b..755a00e8d 100644
--- a/libs/video/renderer/gl/gl_sky_clip.c
+++ b/libs/video/renderer/gl/gl_sky_clip.c
@@ -64,7 +64,8 @@
 #define BOX_WIDTH 2056
 
 /* cube face to sky texture offset conversion */
-static const int skytex_offs[] = { 3, 0, 4, 1, 2, 5 };
+// see gl_sky.c for naming:       rt bk up lf ft dn
+static const int skytex_offs[] = { 0, 1, 4, 2, 3, 5 };
 
 /* convert axis and face distance into face */
 static const int faces_table[3][6] = {
@@ -238,8 +239,8 @@ set_vertex (struct box_def *box, int face, int ind, const vec3_t v)
 			box->face[face].poly.verts[ind][4] = (1024 - v[2] + 4) / BOX_WIDTH;
 			break;
 		case 2:
-			box->face[face].poly.verts[ind][3] = (1024 + v[0] + 4) / BOX_WIDTH;
-			box->face[face].poly.verts[ind][4] = (1024 + v[1] + 4) / BOX_WIDTH;
+			box->face[face].poly.verts[ind][3] = (1024 - v[1] + 4) / BOX_WIDTH;
+			box->face[face].poly.verts[ind][4] = (1024 + v[0] + 4) / BOX_WIDTH;
 			break;
 		case 3:
 			box->face[face].poly.verts[ind][3] = (1024 + v[1] + 4) / BOX_WIDTH;
@@ -250,8 +251,8 @@ set_vertex (struct box_def *box, int face, int ind, const vec3_t v)
 			box->face[face].poly.verts[ind][4] = (1024 - v[2] + 4) / BOX_WIDTH;
 			break;
 		case 5:
-			box->face[face].poly.verts[ind][3] = (1024 + v[0] + 4) / BOX_WIDTH;
-			box->face[face].poly.verts[ind][4] = (1024 - v[1] + 4) / BOX_WIDTH;
+			box->face[face].poly.verts[ind][3] = (1024 - v[1] + 4) / BOX_WIDTH;
+			box->face[face].poly.verts[ind][4] = (1024 - v[0] + 4) / BOX_WIDTH;
 			break;
 	}
 }