diff --git a/locales/en.json b/locales/en.json
index 03ecdbccd..1ad7361e9 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -23,7 +23,7 @@
     "app_id_invalid": "Invalid app ID",
     "app_incompatible": "The app {app} is incompatible with your YunoHost version",
     "app_install_files_invalid": "These files cannot be installed",
-    "app_install_failed": "Could not install {app}",
+    "app_install_failed": "Could not install {app}: {error}",
     "app_install_script_failed": "An error occured inside the app installation script",
     "app_location_already_used": "The app '{app}' is already installed in ({path})",
     "app_make_default_location_already_used": "Can't make the app '{app}' the default on the domain, {domain} is already in use by the other app '{other_app}'",
diff --git a/src/yunohost/app.py b/src/yunohost/app.py
index 9074c90fd..5b7202362 100644
--- a/src/yunohost/app.py
+++ b/src/yunohost/app.py
@@ -994,19 +994,19 @@ def app_install(operation_logger, app, label=None, args=None, no_remove_on_failu
         install_failed = True if install_retcode != 0 else False
         if install_failed:
             error = m18n.n('app_install_script_failed')
-            logger.exception(error)
-            operation_logger.error(error)
+            logger.exception(m18n.n("app_install_failed", app=app_id, error=error))
+            failure_message_with_debug_instructions = operation_logger.error(error)
     # Script got manually interrupted ... N.B. : KeyboardInterrupt does not inherit from Exception
     except (KeyboardInterrupt, EOFError):
         error = m18n.n('operation_interrupted')
-        logger.exception(error)
-        operation_logger.error(error)
+        logger.exception(m18n.n("app_install_failed", app=app_id, error=error))
+        failure_message_with_debug_instructions = operation_logger.error(error)
     # Something wrong happened in Yunohost's code (most probably hook_exec)
-    except Exception as e :
+    except Exception as e:
         import traceback
         error = m18n.n('unexpected_error', error=u"\n" + traceback.format_exc())
-        logger.exception(error)
-        operation_logger.error(error)
+        logger.exception(m18n.n("app_install_failed", app=app_id, error=error))
+        failure_message_with_debug_instructions = operation_logger.error(error)
     finally:
         # Whatever happened (install success or failure) we check if it broke the system
         # and warn the user about it
@@ -1015,8 +1015,8 @@ def app_install(operation_logger, app, label=None, args=None, no_remove_on_failu
             _assert_system_is_sane_for_app(manifest, "post")
         except Exception as e:
             broke_the_system = True
-            logger.exception(str(e))
-            operation_logger.error(str(e))
+            logger.exception(m18n.n("app_install_failed", app=app_id, error=str(e)))
+            failure_message_with_debug_instructions = operation_logger.error(str(e))
 
         # If the install failed or broke the system, we remove it
         if install_failed or broke_the_system:
@@ -1076,7 +1076,7 @@ def app_install(operation_logger, app, label=None, args=None, no_remove_on_failu
 
             app_ssowatconf()
 
-            raise YunohostError("app_install_failed", app=app_id)
+            raise YunohostError(failure_message_with_debug_instructions, raw_msg=True)
 
     # Clean hooks and add new ones
     hook_remove(app_instance_name)