diff --git a/Resources/Prototypes/Shaders/outline.yml b/Resources/Prototypes/Shaders/outline.yml
index 8469e30158..83b99f07ea 100644
--- a/Resources/Prototypes/Shaders/outline.yml
+++ b/Resources/Prototypes/Shaders/outline.yml
@@ -4,7 +4,7 @@
   path: "/Textures/Shaders/outline.swsl"
   params:
     outline_color: "#FF000055"
-    light_boost: 2
+    light_boost: 1
 
 - type: shader
   id: SelectionOutlineInrange
@@ -12,4 +12,4 @@
   path: "/Textures/Shaders/outline.swsl"
   params:
     outline_color: "#00FF0055"
-    light_boost: 4
+    light_boost: 2
diff --git a/Resources/Textures/Shaders/outline.swsl b/Resources/Textures/Shaders/outline.swsl
index 7fce6809f6..d465946ae6 100644
--- a/Resources/Textures/Shaders/outline.swsl
+++ b/Resources/Textures/Shaders/outline.swsl
@@ -73,6 +73,6 @@ void fragment() {
     mina = min(a, mina);
 
 	lowp float sampledLight = outline_fullbright ? 1.0 : sqrt(mix(0.0, 1.0, (lightSample.r * 0.34) + (lightSample.g * 0.5) + (lightSample.b * 0.16)) * light_boost);
-	COLOR = mix(col, outline_color * sampledLight, maxa - col.a);
+	COLOR = mix(col, outline_color * vec4(vec3(sampledLight), 1.0), maxa - col.a);
 	lightSample = vec3(1.0);
 }