diff --git a/bauh/core/controller.py b/bauh/core/controller.py
index bd94425f..c1665bdd 100755
--- a/bauh/core/controller.py
+++ b/bauh/core/controller.py
@@ -120,11 +120,11 @@ class GenericApplicationManager(ApplicationManager):
 
         return installed
 
-    def downgrade_app(self, app: Application, root_password: str) -> SystemProcess:
+    def downgrade_app(self, app: Application, root_password: str, handler: ProcessHandler) -> bool:
         man = self._get_manager_for(app)
 
         if man and app.can_be_downgraded():
-            return man.downgrade_app(app, root_password)
+            return man.downgrade_app(app, root_password, handler)
         else:
             raise Exception("downgrade is not possible for {}".format(app.__class__.__name__))
 
diff --git a/bauh/resources/locale/en b/bauh/resources/locale/en
index 3b2288d1..ef32e422 100644
--- a/bauh/resources/locale/en
+++ b/bauh/resources/locale/en
@@ -32,8 +32,6 @@ popup.root.title=Requires root privileges
 popup.root.password=Password
 popup.root.bad_password.title=Error
 popup.root.bad_password.body=Wrong password
-popup.downgrade.impossible.title=Error
-popup.downgrade.impossible.body=Impossible to downgrade: the app is in its first version
 popup.history.title=History
 popup.history.selected.tooltip=Current version
 popup.button.yes=Yes
diff --git a/bauh/resources/locale/es b/bauh/resources/locale/es
index c58552b3..0413c891 100644
--- a/bauh/resources/locale/es
+++ b/bauh/resources/locale/es
@@ -34,8 +34,6 @@ popup.root.title=Requiere privilegios de root
 popup.root.password=Contraseña
 popup.root.bad_password.title=Error
 popup.root.bad_password.body=Contraseña incorrecta
-popup.downgrade.impossible.title=Error
-popup.downgrade.impossible.body=Imposible revertir la versión: el aplicativo está en su primera versión
 popup.history.title=Historia
 popup.history.selected.tooltip=Versión actual
 popup.button.yes=Sí
diff --git a/bauh/resources/locale/pt b/bauh/resources/locale/pt
index a12aeca7..8d1ce924 100644
--- a/bauh/resources/locale/pt
+++ b/bauh/resources/locale/pt
@@ -34,8 +34,6 @@ popup.root.title=Requer privilégios de root
 popup.root.password=Senha
 popup.root.bad_password.title=Erro
 popup.root.bad_password.body=Senha incorreta
-popup.downgrade.impossible.title=Erro
-popup.downgrade.impossible.body=Impossível reverter a versão: o aplicativo está na sua primeira versão
 popup.history.title=Histórico
 popup.history.selected.tooltip=Versão atual
 popup.button.yes=Sim
diff --git a/bauh/view/qt/history.py b/bauh/view/qt/history.py
index 59cb2611..e07e9593 100644
--- a/bauh/view/qt/history.py
+++ b/bauh/view/qt/history.py
@@ -25,7 +25,7 @@ class HistoryDialog(QDialog):
 
         table_history.setColumnCount(len(app['history'][0]))
         table_history.setRowCount(len(app['history']))
-        table_history.setHorizontalHeaderLabels([locale_keys['flatpak.info.' + key].capitalize() for key in sorted(app['history'][0].keys())])
+        table_history.setHorizontalHeaderLabels([locale_keys.get(app['model'].get_type() + '.info.' + key, key).capitalize() for key in sorted(app['history'][0].keys())])
 
         for row, commit in enumerate(app['history']):
 
diff --git a/bauh/view/qt/thread.py b/bauh/view/qt/thread.py
index b0891fb5..12dc0ff8 100644
--- a/bauh/view/qt/thread.py
+++ b/bauh/view/qt/thread.py
@@ -52,8 +52,11 @@ class AsyncAction(QThread, ProcessHandler):
         proc.subproc.communicate()
         return proc.subproc.returncode is None or proc.subproc.returncode == 0
 
+    def show_error(self, title: str, body: str):
+        dialog.show_error(title, body)
 
-class UpdateSelectedApps(AsyncAction, ProcessHandler):
+
+class UpdateSelectedApps(AsyncAction):
 
     signal_finished = pyqtSignal(bool, int)
     signal_status = pyqtSignal(str)
@@ -101,7 +104,7 @@ class RefreshApps(QThread):
         self.signal.emit(self.manager.read_installed())
 
 
-class UninstallApp(AsyncAction, ProcessHandler):
+class UninstallApp(AsyncAction):
     signal_finished = pyqtSignal(object)
     signal_output = pyqtSignal(str)
 
@@ -145,16 +148,9 @@ class DowngradeApp(AsyncAction):
 
     def run(self):
         if self.app:
-
             success = False
             try:
-                process = self.manager.downgrade_app(self.app.model, self.root_password)
-
-                if process is None:
-                    dialog.show_error(title=self.locale_keys['popup.downgrade.impossible.title'],
-                                      body=self.locale_keys['popup.downgrade.impossible.body'])
-                else:
-                    success = self.notify_subproc_outputs(process, self.signal_output)
+                success = self.manager.downgrade_app(self.app.model, self.root_password, self)
             except (requests.exceptions.ConnectionError, NoInternetException):
                 success = False
                 self.signal_output.emit(self.locale_keys['internet.required'])
@@ -163,6 +159,13 @@ class DowngradeApp(AsyncAction):
                 self.root_password = None
                 self.signal_finished.emit(success)
 
+    def handle(self, proc: SystemProcess) -> bool:
+        return self.notify_subproc_outputs(proc, self.signal_output)
+
+    def notify(self, msg: str):
+        if msg:
+            self.signal_output.emit(msg)
+
 
 class GetAppInfo(QThread):
     signal_finished = pyqtSignal(dict)