diff --git a/src/libtmux/common.py b/src/libtmux/common.py
index a84068042..bc9140b24 100644
--- a/src/libtmux/common.py
+++ b/src/libtmux/common.py
@@ -456,11 +456,12 @@ def has_minimum_version(raises: bool = True) -> bool:
         Versions will now remove trailing letters per
         `Issue 55 <https://github.com/tmux-python/tmuxp/issues/55>`_.
     """
-    if get_version() < LooseVersion(TMUX_MIN_VERSION):
+    current_version = get_version()
+    if current_version < LooseVersion(TMUX_MIN_VERSION):
         if raises:
             msg = (
                 f"libtmux only supports tmux {TMUX_MIN_VERSION} and greater. This "
-                f"system has {get_version()} installed. Upgrade your tmux to use "
+                f"system has {current_version} installed. Upgrade your tmux to use "
                 "libtmux, or use libtmux v0.48.x for older tmux versions."
             )
             raise exc.VersionTooLow(msg)
diff --git a/src/libtmux/server.py b/src/libtmux/server.py
index 68881b158..181e5223c 100644
--- a/src/libtmux/server.py
+++ b/src/libtmux/server.py
@@ -213,6 +213,14 @@ def is_alive(self) -> bool:
     def raise_if_dead(self) -> None:
         """Raise if server not connected.
 
+        Raises
+        ------
+        :exc:`exc.TmuxCommandNotFound`
+            When the tmux binary cannot be found or executed.
+        :class:`subprocess.CalledProcessError`
+            When the tmux server is not running (non-zero exit from
+            ``list-sessions``).
+
         >>> tmux = Server(socket_name="no_exist")
         >>> try:
         ...     tmux.raise_if_dead()
@@ -232,7 +240,11 @@ def raise_if_dead(self) -> None:
         if self.config_file:
             cmd_args.insert(0, f"-f{self.config_file}")
 
-        subprocess.check_call([tmux_bin, *cmd_args])
+        subprocess.check_call(
+            [tmux_bin, *cmd_args],
+            stdout=subprocess.DEVNULL,
+            stderr=subprocess.DEVNULL,
+        )
 
     #
     # Command