diff --git a/copyparty/util.py b/copyparty/util.py
index c153252a..52a16519 100644
--- a/copyparty/util.py
+++ b/copyparty/util.py
@@ -57,6 +57,11 @@ from .__init__ import (
 )
 from .__version__ import S_BUILD_DT, S_VERSION
 
+
+def noop(*a, **ka):
+    pass
+
+
 try:
     from datetime import datetime, timezone
 
@@ -281,6 +286,9 @@ except:
     BITNESS = struct.calcsize("P") * 8
 
 
+CAN_SIGMASK = not (ANYWIN or PY2 or GRAAL)
+
+
 RE_ANSI = re.compile("\033\\[[^mK]*[mK]")
 RE_HTML_SH = re.compile(r"[<>&$?`\"';]")
 RE_CTYPE = re.compile(r"^content-type: *([^; ]+)", re.IGNORECASE)
@@ -780,7 +788,7 @@ class Daemon(threading.Thread):
             self.start()
 
     def run(self):
-        if not ANYWIN and not PY2 and not GRAAL:
+        if CAN_SIGMASK:
             signal.pthread_sigmask(
                 signal.SIG_BLOCK, [signal.SIGINT, signal.SIGTERM, signal.SIGUSR1]
             )
@@ -1656,15 +1664,15 @@ def log_thrs(log: Callable[[str, str, int], None], ival: float, name: str) -> No
         log(name, "\033[0m \033[33m".join(tv), 3)
 
 
-def sigblock():
-    if ANYWIN or PY2 or GRAAL:
-        return
-
+def _sigblock():
     signal.pthread_sigmask(
         signal.SIG_BLOCK, [signal.SIGINT, signal.SIGTERM, signal.SIGUSR1]
     )
 
 
+sigblock = _sigblock if CAN_SIGMASK else noop
+
+
 def vol_san(vols: list["VFS"], txt: bytes) -> bytes:
     txt0 = txt
     for vol in vols: