diff --git a/engine/gl/r_bishaders.h b/engine/gl/r_bishaders.h
index 2bd37187f..0958cb968 100644
--- a/engine/gl/r_bishaders.h
+++ b/engine/gl/r_bishaders.h
@@ -4497,6 +4497,7 @@ YOU SHOULD NOT EDIT THIS FILE BY HAND
 {QR_OPENGL, 110, "defaultskybox",
 "!!permu FOG\n"
 "!!samps reflectcube\n"
+"!!cvardf r_skyfog=0.5\n"
 "#include \"sys/defs.h\"\n"
 "#include \"sys/fog.h\"\n"
 
@@ -4515,7 +4516,7 @@ YOU SHOULD NOT EDIT THIS FILE BY HAND
 "void main ()\n"
 "{\n"
 "vec4 skybox = textureCube(s_reflectcube, pos);\n"
-"gl_FragColor = vec4(fog3(skybox.rgb), 1.0);\n"
+"gl_FragColor = vec4(mix(skybox.rgb, fog3(skybox.rgb), float(r_skyfog)), 1.0);\n"
 "}\n"
 "#endif\n"
 },
diff --git a/engine/shaders/glsl/defaultskybox.glsl b/engine/shaders/glsl/defaultskybox.glsl
index 7af902c8a..32008b693 100644
--- a/engine/shaders/glsl/defaultskybox.glsl
+++ b/engine/shaders/glsl/defaultskybox.glsl
@@ -1,5 +1,6 @@
 !!permu FOG
 !!samps reflectcube
+!!cvardf r_skyfog=0.5
 #include "sys/defs.h"
 #include "sys/fog.h"
 
@@ -18,6 +19,6 @@ void main ()
 void main ()
 {
 	vec4 skybox = textureCube(s_reflectcube, pos);
-	gl_FragColor = vec4(fog3(skybox.rgb), 1.0);
+	gl_FragColor = vec4(mix(skybox.rgb, fog3(skybox.rgb), float(r_skyfog)), 1.0);
 }
 #endif