diff --git a/app/ui/legacy/src/main/java/com/fsck/k9/ui/messageview/MessageContainerView.java b/app/ui/legacy/src/main/java/com/fsck/k9/ui/messageview/MessageContainerView.kt
similarity index 100%
rename from app/ui/legacy/src/main/java/com/fsck/k9/ui/messageview/MessageContainerView.java
rename to app/ui/legacy/src/main/java/com/fsck/k9/ui/messageview/MessageContainerView.kt