diff --git a/src/gl/scene/gl_sprite.cpp b/src/gl/scene/gl_sprite.cpp
index 4969f1f71..a99bc375c 100644
--- a/src/gl/scene/gl_sprite.cpp
+++ b/src/gl/scene/gl_sprite.cpp
@@ -363,6 +363,7 @@ void GLSprite::Draw(int pass)
 				: ThingColor.Modulate(cursec->SpecialColors[sector_t::sprites]);
 
 			gl_RenderState.SetObjectColor(finalcol);
+			gl_RenderState.SetAddColor(cursec->SpecialColors[sector_t::add]);
 		}
 		mDrawer->SetColor(lightlevel, rel, Colormap, trans);
 	}
@@ -501,6 +502,7 @@ void GLSprite::Draw(int pass)
 	}
 
 	gl_RenderState.SetObjectColor(0xffffffff);
+	gl_RenderState.SetAddColor(0);
 	gl_RenderState.EnableTexture(true);
 	gl_RenderState.SetDynLight(0,0,0);
 }
diff --git a/src/gl/scene/gl_walls_draw.cpp b/src/gl/scene/gl_walls_draw.cpp
index b6c57e53d..497cdb1ac 100644
--- a/src/gl/scene/gl_walls_draw.cpp
+++ b/src/gl/scene/gl_walls_draw.cpp
@@ -368,6 +368,7 @@ void GLWall::RenderTextured(int rflags)
 		PalEntry color2 = side->GetSpecialColor(tierndx, side_t::wallbottom, frontsector);
 		gl_RenderState.SetObjectColor(color1);
 		gl_RenderState.SetObjectColor2(color2);
+		gl_RenderState.SetAddColor(seg->frontsector->SpecialColors[sector_t::add]);
 		if (color1 != color2)
 		{
 			// Do gradient setup only if there actually is a gradient.
@@ -432,6 +433,7 @@ void GLWall::RenderTextured(int rflags)
 	}
 	gl_RenderState.SetObjectColor(0xffffffff);
 	gl_RenderState.SetObjectColor2(0);
+	gl_RenderState.SetAddColor(0);
 	gl_RenderState.SetTextureMode(tmode);
 	gl_RenderState.EnableGlow(false);
 	gl_RenderState.EnableGradient(false);
diff --git a/src/gl/scene/gl_weapon.cpp b/src/gl/scene/gl_weapon.cpp
index f9f03a297..f65b28ab4 100644
--- a/src/gl/scene/gl_weapon.cpp
+++ b/src/gl/scene/gl_weapon.cpp
@@ -447,6 +447,7 @@ void GLSceneDrawer::DrawPlayerSprites(sector_t * viewsector, bool hudModelStep)
 				}
 				SetColor(ll, 0, cmc, trans, true);
 			}
+			// gl_RenderState.SetAddColor(0);
 
 			if (psp->firstTic)
 			{ // Can't interpolate the first tic.
@@ -475,6 +476,7 @@ void GLSceneDrawer::DrawPlayerSprites(sector_t * viewsector, bool hudModelStep)
 		}
 	}
 	gl_RenderState.SetObjectColor(0xffffffff);
+	gl_RenderState.SetAddColor(0);
 	gl_RenderState.SetDynLight(0, 0, 0);
 	gl_RenderState.EnableBrightmap(false);
 	glset.lightmode = oldlightmode;
diff --git a/wadsrc/static/shaders/glsl/main.fp b/wadsrc/static/shaders/glsl/main.fp
index 95cf9c475..21b081157 100644
--- a/wadsrc/static/shaders/glsl/main.fp
+++ b/wadsrc/static/shaders/glsl/main.fp
@@ -93,7 +93,7 @@ vec4 getTexel(vec2 st)
 	if (uObjectColor2.a == 0.0) texel *= uObjectColor;
 	else texel *= mix(uObjectColor, uObjectColor2, gradientdist.z);
 
-	texel += uAddColor;
+	texel.rgb += uAddColor.rgb;
 
 	return desaturate(texel);
 }