diff --git a/src/textual/drivers/linux_driver.py b/src/textual/drivers/linux_driver.py
index 0bfd5cbf1d..510b0992f0 100644
--- a/src/textual/drivers/linux_driver.py
+++ b/src/textual/drivers/linux_driver.py
@@ -267,8 +267,6 @@ def on_terminal_resize(signum, stack) -> None:
         self.write("\x1b[?25l")  # Hide cursor
         self.write("\x1b[?1004h")  # Enable FocusIn/FocusOut.
         self.write("\x1b[>1u")  # https://sw.kovidgoyal.net/kitty/keyboard-protocol/
-        # Disambiguate escape codes https://sw.kovidgoyal.net/kitty/keyboard-protocol/#progressive-enhancement
-        self.write("\x1b[=1;u")
 
         self.flush()
         self._key_thread = Thread(target=self._run_input_thread)
diff --git a/src/textual/widgets/_tabs.py b/src/textual/widgets/_tabs.py
index 94df1352a4..5adad4895c 100644
--- a/src/textual/widgets/_tabs.py
+++ b/src/textual/widgets/_tabs.py
@@ -96,7 +96,6 @@ class Tab(Static):
         width: auto;
         height: 1;
         padding: 0 1;
-        margin: 0 1;
         text-align: center;
         color: $foreground 50%;