diff --git a/desktop/onionshare/resources/locale/en.json b/desktop/onionshare/resources/locale/en.json
index f25c30e2..375c4bc7 100644
--- a/desktop/onionshare/resources/locale/en.json
+++ b/desktop/onionshare/resources/locale/en.json
@@ -151,6 +151,7 @@
     "history_requests_tooltip": "{} web requests",
     "error_cannot_create_data_dir": "Could not create OnionShare data folder: {}",
     "gui_receive_mode_warning": "Receive mode lets people upload files to your computer.<br><br><b>Some files can potentially take control of your computer if you open them. Only open things from people you trust, or if you know what you are doing.</b>",
+    "gui_chat_mode_explainer": "Chat mode lets you chat interactively with others, in Tor Browser.<br><br><b>Chat history is not stored in OnionShare. The chat history will disappear when you close Tor Browser.</b>",
     "gui_open_folder_error": "Could not open the folder with xdg-open. The file is here: {}",
     "gui_settings_language_label": "Language",
     "gui_settings_theme_label": "Theme",
diff --git a/desktop/onionshare/tab/mode/chat_mode/__init__.py b/desktop/onionshare/tab/mode/chat_mode/__init__.py
index 01f194b1..cb4f6911 100644
--- a/desktop/onionshare/tab/mode/chat_mode/__init__.py
+++ b/desktop/onionshare/tab/mode/chat_mode/__init__.py
@@ -80,6 +80,11 @@ class ChatMode(Mode):
         header_label = QtWidgets.QLabel(strings._("gui_new_tab_chat_button"))
         header_label.setStyleSheet(self.common.gui.css["mode_header_label"])
 
+        # Chat mode explainer
+        chat_mode_explainer = QtWidgets.QLabel(strings._("gui_chat_mode_explainer"))
+        chat_mode_explainer.setMinimumHeight(80)
+        chat_mode_explainer.setWordWrap(True)
+
         # Top bar
         top_bar_layout = QtWidgets.QHBoxLayout()
         # Add space at the top, same height as the toggle history bar in other modes
@@ -89,6 +94,7 @@ class ChatMode(Mode):
         self.main_layout = QtWidgets.QVBoxLayout()
         self.main_layout.addLayout(top_bar_layout)
         self.main_layout.addWidget(header_label)
+        self.main_layout.addWidget(chat_mode_explainer)
         self.main_layout.addWidget(self.primary_action, stretch=1)
         self.main_layout.addWidget(self.server_status)
         self.main_layout.addWidget(MinimumSizeWidget(700, 0))