diff --git a/files/materials/water.shader b/files/materials/water.shader
index ac6b81240d..09788d45b1 100644
--- a/files/materials/water.shader
+++ b/files/materials/water.shader
@@ -295,7 +295,7 @@
         }
         else
         {
-            float fogValue = shSaturate((length(cameraPos.xyz-position.xyz) - fogParams.y) * fogParams.w);
+            float fogValue = shSaturate((depthPassthrough - fogParams.y) * fogParams.w);
             shOutputColour(0).xyz = shLerp (shOutputColour(0).xyz, fogColor, fogValue);
         }