diff --git a/app/src/main/kotlin/org/fossify/messages/dialogs/ExportMessagesDialog.kt b/app/src/main/kotlin/org/fossify/messages/dialogs/ExportMessagesDialog.kt
index cf3007f26..9b2912f4b 100644
--- a/app/src/main/kotlin/org/fossify/messages/dialogs/ExportMessagesDialog.kt
+++ b/app/src/main/kotlin/org/fossify/messages/dialogs/ExportMessagesDialog.kt
@@ -34,7 +34,7 @@ class ExportMessagesDialog(
         exportSmsCheckbox.isChecked = config.exportSms
         exportMmsCheckbox.isChecked = config.exportMms
         exportMessagesFilename.setText(
-            "${activity.getString(R.string.messages)}_${activity.getCurrentFormattedDateTime()}"
+            "${activity.getString(R.string.messages)}_${activity.getCurrentFormattedDateTime()}.json"
         )
     }