diff --git a/source/blender/sequencer/intern/render.cc b/source/blender/sequencer/intern/render.cc
index 3fb9cb4743f..c4f7cf1c487 100644
--- a/source/blender/sequencer/intern/render.cc
+++ b/source/blender/sequencer/intern/render.cc
@@ -588,7 +588,6 @@ static void multibuf(ImBuf *ibuf, const float fmul)
       rt[0] = min_ii((imul * rt[0]) >> 8, 255);
       rt[1] = min_ii((imul * rt[1]) >> 8, 255);
       rt[2] = min_ii((imul * rt[2]) >> 8, 255);
-      rt[3] = min_ii((imul * rt[3]) >> 8, 255);
 
       rt += 4;
     }
@@ -599,15 +598,10 @@ static void multibuf(ImBuf *ibuf, const float fmul)
       rt_float[0] *= fmul;
       rt_float[1] *= fmul;
       rt_float[2] *= fmul;
-      rt_float[3] *= fmul;
 
       rt_float += 4;
     }
   }
-
-  if (ELEM(ibuf->planes, R_IMF_PLANES_BW, R_IMF_PLANES_RGB) && fmul < 1.0f) {
-    ibuf->planes = R_IMF_PLANES_RGBA;
-  }
 }
 
 static ImBuf *input_preprocess(const SeqRenderData *context,