diff --git a/qt/aqt/addons.py b/qt/aqt/addons.py
index 06dacf442..e0eb7cd5f 100644
--- a/qt/aqt/addons.py
+++ b/qt/aqt/addons.py
@@ -861,7 +861,8 @@ def installAddonPackages(
     paths: List[str],
     parent: Optional[QWidget] = None,
     warn: bool = False,
-    strictly_modal: bool = False
+    strictly_modal: bool = False,
+    advise_restart: bool = False,
 ) -> bool:
 
     if warn:
@@ -889,6 +890,10 @@ def installAddonPackages(
 
     if log:
         log_html = "<br>".join(log)
+        if advise_restart:
+            log_html += "<br><br>" + _(
+                "<b>Please restart Anki to complete the installation.</b>"
+            )
         if len(log) == 1 and not strictly_modal:
             tooltip(log_html, parent=parent)
         else:
diff --git a/qt/aqt/main.py b/qt/aqt/main.py
index 81198238f..c041042f0 100644
--- a/qt/aqt/main.py
+++ b/qt/aqt/main.py
@@ -1035,10 +1035,13 @@ QTreeWidget {
     def installAddon(self, path: str, startup: bool = False):
         from aqt.addons import installAddonPackages
 
-        parent = None if startup else self
-
         installAddonPackages(
-            self.addonManager, [path], warn=True, strictly_modal=startup, parent=parent
+            self.addonManager,
+            [path],
+            warn=True,
+            advise_restart=not startup,
+            strictly_modal=startup,
+            parent=None if startup else self,
         )
 
     # Cramming