diff --git a/qutebrowser/components/caretcommands.py b/qutebrowser/components/caretcommands.py
index 98791e921..fe04f2483 100644
--- a/qutebrowser/components/caretcommands.py
+++ b/qutebrowser/components/caretcommands.py
@@ -108,12 +108,14 @@ def move_to_prev_word(tab: apitypes.Tab, count: int = 1):
 
 
 @cmdutils.register(modes=[cmdutils.KeyMode.caret])
+@cmdutils.argument('tab', value=cmdutils.Value.cur_tab)
 def move_to_start_of_line(tab: apitypes.Tab):
     """Move the cursor or selection to the start of the line."""
     tab.caret.move_to_start_of_line()
 
 
 @cmdutils.register(modes=[cmdutils.KeyMode.caret])
+@cmdutils.argument('tab', value=cmdutils.Value.cur_tab)
 def move_to_end_of_line(tab: apitypes.Tab):
     """Move the cursor or selection to the end of line."""
     tab.caret.move_to_end_of_line()
diff --git a/qutebrowser/components/misccommands.py b/qutebrowser/components/misccommands.py
index 9ecaa999c..2f9e2f5e5 100644
--- a/qutebrowser/components/misccommands.py
+++ b/qutebrowser/components/misccommands.py
@@ -226,7 +226,7 @@ def debug_webaction(tab, action, count=1):
 
 
 @cmdutils.register()
-@cmdutils.argument('tab', value=cmdutils.Value.cur_tab)
+@cmdutils.argument('tab', value=cmdutils.Value.count_tab)
 def tab_mute(tab):
     """Mute/Unmute the current/[count]th tab.