diff --git a/Barotrauma/BarotraumaClient/Source/Map/Lights/LightManager.cs b/Barotrauma/BarotraumaClient/Source/Map/Lights/LightManager.cs
index d8405163e..e17aca912 100644
--- a/Barotrauma/BarotraumaClient/Source/Map/Lights/LightManager.cs
+++ b/Barotrauma/BarotraumaClient/Source/Map/Lights/LightManager.cs
@@ -82,7 +82,7 @@ namespace Barotrauma.Lights
 #if WINDOWS
             LosEffect = content.Load<Effect>("losshader");
 #else
-            losEffect = content.Load<Effect>("losshader_opengl");
+            LosEffect = content.Load<Effect>("losshader_opengl");
 #endif
 
             if (lightEffect == null)
diff --git a/Barotrauma/BarotraumaClient/Source/Screens/GameScreen.cs b/Barotrauma/BarotraumaClient/Source/Screens/GameScreen.cs
index 3c66a302b..e78de2f5b 100644
--- a/Barotrauma/BarotraumaClient/Source/Screens/GameScreen.cs
+++ b/Barotrauma/BarotraumaClient/Source/Screens/GameScreen.cs
@@ -237,8 +237,14 @@ namespace Barotrauma
 			if (GameMain.LightManager.LosEnabled && Character.Controlled!=null)
 			{
                 GameMain.LightManager.LosEffect.CurrentTechnique = GameMain.LightManager.LosEffect.Techniques["LosShader"];
+#if LINUX
+                GameMain.LightManager.LosEffect.Parameters["TextureSampler+xTexture"].SetValue(renderTargetBackground);
+                GameMain.LightManager.LosEffect.Parameters["LosSampler+xLosTexture"].SetValue(GameMain.LightManager.losTexture);
+#else
                 GameMain.LightManager.LosEffect.Parameters["xTexture"].SetValue(renderTargetBackground);
                 GameMain.LightManager.LosEffect.Parameters["xLosTexture"].SetValue(GameMain.LightManager.losTexture);
+#endif
+
 
                 //convert the los color to HLS and make sure the luminance of the color is always the same regardless
                 //of the ambient light color and the luminance of the damage overlight color