diff --git a/bauh/gems/appimage/controller.py b/bauh/gems/appimage/controller.py
index 99b16e9a..44d3ce82 100644
--- a/bauh/gems/appimage/controller.py
+++ b/bauh/gems/appimage/controller.py
@@ -162,7 +162,8 @@ class AppImageManager(SoftwareManager):
                                             components=[FormComponent(label='', components=[file_chooser, input_version], spaces=False)],
                                             confirmation_label=self.i18n['proceed'].capitalize(),
                                             deny_label=self.i18n['cancel'].capitalize()):
-                if not file_chooser.file_path or not os.path.isfile(file_chooser.file_path):
+
+                if not file_chooser.file_path or not os.path.isfile(file_chooser.file_path) or not file_chooser.file_path.lower().strip().endswith('.appimage'):
                     watcher.request_confirmation(title=self.i18n['error'].capitalize(),
                                                  body=self.i18n['appimage.custom_action.install_file.invalid_file'],
                                                  deny_button=False)