diff --git a/modules/base/rendering/renderabledisc.cpp b/modules/base/rendering/renderabledisc.cpp
index 899a006640..90b749cbbd 100644
--- a/modules/base/rendering/renderabledisc.cpp
+++ b/modules/base/rendering/renderabledisc.cpp
@@ -124,6 +124,8 @@ RenderableDisc::RenderableDisc(const ghoul::Dictionary& dictionary)
     addProperty(_width);
 
     addProperty(_opacity);
+
+    setRenderBin(Renderable::RenderBin::PostDeferredTransparent);
 }
 
 bool RenderableDisc::isReady() const {
@@ -185,7 +187,7 @@ void RenderableDisc::render(const RenderData& data, RendererTasks&) {
     _shader->setUniform(_uniformCache.texture, unit);
 
     glEnablei(GL_BLEND, 0);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
     glDepthMask(false);
     glDisable(GL_CULL_FACE);
 
diff --git a/modules/base/shaders/disc_fs.glsl b/modules/base/shaders/disc_fs.glsl
index 7d0d15dc1d..0c3f3761c4 100644
--- a/modules/base/shaders/disc_fs.glsl
+++ b/modules/base/shaders/disc_fs.glsl
@@ -2,7 +2,7 @@
  *                                                                                       *
  * OpenSpace                                                                             *
  *                                                                                       *
- * Copyright (c) 2014-2020                                                               *
+ * Copyright (c) 2014-2021                                                               *
  *                                                                                       *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
  * software and associated documentation files (the "Software"), to deal in the Software *
@@ -25,7 +25,7 @@
 #include "fragment.glsl"
 
 in vec2 vs_st;
-in vec4 vs_position;
+in float vs_screenSpaceDepth;
 
 uniform sampler1D colorTexture;
 uniform float width;
@@ -55,6 +55,6 @@ Fragment getFragment() {
 
     Fragment frag;
     frag.color = diffuse;
-    frag.depth = vs_position.w;
+    frag.depth = vs_screenSpaceDepth;
     return frag;
 }
diff --git a/modules/base/shaders/disc_vs.glsl b/modules/base/shaders/disc_vs.glsl
index a3f6cbedb6..05ae85dfd4 100644
--- a/modules/base/shaders/disc_vs.glsl
+++ b/modules/base/shaders/disc_vs.glsl
@@ -2,7 +2,7 @@
  *                                                                                       *
  * OpenSpace                                                                             *
  *                                                                                       *
- * Copyright (c) 2014-2020                                                               *
+ * Copyright (c) 2014-2021                                                               *
  *                                                                                       *
  * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
  * software and associated documentation files (the "Software"), to deal in the Software *
@@ -30,15 +30,16 @@ layout(location = 0) in vec2 in_position;
 layout(location = 1) in vec2 in_st;
 
 out vec2 vs_st;
-out vec4 vs_position;
+out float vs_screenSpaceDepth;
 
 uniform mat4 modelViewProjectionTransform;
 
 void main() {
-    vs_st = in_st;
+    vec4 position = vec4(in_position.xy, 0.0, 1.0);
+    vec4 positionScreenSpace = z_normalization(modelViewProjectionTransform * position);
 
-    vs_position = z_normalization(
-        modelViewProjectionTransform * vec4(in_position.xy, 0.0, 1.0)
-    );
-    gl_Position = vs_position;
+    vs_st = in_st;
+    vs_screenSpaceDepth = positionScreenSpace.w;
+
+    gl_Position = positionScreenSpace;
 }