diff --git a/src/pyj/read_book/shortcuts.pyj b/src/pyj/read_book/shortcuts.pyj
index 6273d099e1..8042f2960e 100644
--- a/src/pyj/read_book/shortcuts.pyj
+++ b/src/pyj/read_book/shortcuts.pyj
@@ -90,10 +90,8 @@ def key_as_text(evt):
     return mods + key
 
 
-def shortcuts_definition():
-    ans = shortcuts_definition.ans
-    if not ans:
-        ans = shortcuts_definition.ans = {
+def common_shortcuts():  # {{{
+    return {
     'start_of_file': desc(
         v"['Ctrl+ArrowUp', 'Ctrl+ArrowLeft', 'Home']",
         'scroll',
@@ -364,14 +362,22 @@ def shortcuts_definition():
         _('Auto scroll slower'),
     ),
 
-    }
+    }  # }}}
 
-    if not runtime.is_standalone_viewer:
-        ans['sync_book'] = desc(
-            v"[]",
-            'ui',
-            _('Sync last read position/annotations'),
-        )
+
+def shortcuts_definition():
+    ans = shortcuts_definition.ans
+    if not ans:
+        ans = shortcuts_definition.ans = common_shortcuts()
+
+        if runtime.is_standalone_viewer:
+            add_standalone_viewer_shortcuts(ans)
+        else:
+            ans['sync_book'] = desc(
+                v"[]",
+                'ui',
+                _('Sync last read position/annotations'),
+            )
 
     return ans
 
@@ -387,9 +393,8 @@ def shortcuts_group_desc():
 
 
 
-def add_standalone_viewer_shortcuts():
+def add_standalone_viewer_shortcuts(sc):
     ismacos = 'macos' in window.navigator.userAgent
-    sc = shortcuts_definition()
     sc['toggle_inspector'] = desc(
         v"['Ctrl+i']",
         'ui',
diff --git a/src/pyj/viewer-main.pyj b/src/pyj/viewer-main.pyj
index 0b76e4b711..2d74cea0e1 100644
--- a/src/pyj/viewer-main.pyj
+++ b/src/pyj/viewer-main.pyj
@@ -19,7 +19,6 @@ from read_book.db import new_book
 from read_book.footnotes import main as footnotes_main
 from read_book.globals import runtime, set_system_colors, ui_operations, default_color_schemes
 from read_book.iframe import main as iframe_main
-from read_book.shortcuts import add_standalone_viewer_shortcuts
 from read_book.view import View
 from read_book.prefs.head_foot import set_time_formatter
 from session import local_storage, session_defaults
@@ -303,7 +302,6 @@ if window is window.top:
     TRANSLATIONS_DATA = v'__TRANSLATIONS_DATA__'
     if TRANSLATIONS_DATA:
         install(TRANSLATIONS_DATA)
-    add_standalone_viewer_shortcuts()
     ui_operations.get_file = get_file
     ui_operations.get_mathjax_files = get_mathjax_files
     ui_operations.update_url_state = update_url_state
@@ -430,4 +428,3 @@ else:
         footnotes_main()
     else:
         iframe_main()
-    add_standalone_viewer_shortcuts()