diff --git a/app/src/main/java/com/keylesspalace/tusky/components/compose/dialog/CaptionDialog.kt b/app/src/main/java/com/keylesspalace/tusky/components/compose/dialog/CaptionDialog.kt
index be7ff237c..8a6047379 100644
--- a/app/src/main/java/com/keylesspalace/tusky/components/compose/dialog/CaptionDialog.kt
+++ b/app/src/main/java/com/keylesspalace/tusky/components/compose/dialog/CaptionDialog.kt
@@ -49,8 +49,13 @@ class CaptionDialog : DialogFragment() {
 
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
         val localId = arguments?.getInt(LOCAL_ID_ARG) ?: error("Missing localId")
+        val inset = requireContext().resources.getDimensionPixelSize(R.dimen.caption_dialog_inset)
         return MaterialAlertDialogBuilder(requireContext())
             .setView(createView(savedInstanceState))
+            .setBackgroundInsetTop(inset)
+            .setBackgroundInsetEnd(inset)
+            .setBackgroundInsetBottom(inset)
+            .setBackgroundInsetStart(inset)
             .setPositiveButton(android.R.string.ok) { _, _ ->
                 listener.onUpdateDescription(localId, binding.imageDescriptionText.text.toString())
             }
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index 0d867eac0..c0e64436a 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -79,4 +79,6 @@
     <dimen name="recyclerview_bottom_padding_actionbutton">88dp</dimen>
     <dimen name="recyclerview_bottom_padding_no_actionbutton">32dp</dimen>
 
+    <dimen name="caption_dialog_inset">24dp</dimen>
+
 </resources>