diff --git a/src/widgets/room/delegate/messagelistdelegate.cpp b/src/widgets/room/delegate/messagelistdelegate.cpp
--- a/src/widgets/room/delegate/messagelistdelegate.cpp
+++ b/src/widgets/room/delegate/messagelistdelegate.cpp
@@ -104,7 +104,7 @@
             }
             QPixmapCache::insert(iconUrlStr, fullScale);
         }
-        downScaled = fullScale.scaledToHeight(maxHeight * dpr);
+        downScaled = fullScale.scaledToHeight(maxHeight * dpr, Qt::SmoothTransformation);
         downScaled.setDevicePixelRatio(dpr);
         cache.insertCachedPixmap(iconUrlStr, downScaled);
     }