diff --git a/secretsocket.py b/secretsocket.py
index 01950d3..711fde9 100644
--- a/secretsocket.py
+++ b/secretsocket.py
@@ -15,7 +15,8 @@ log = logging.getLogger('secretsocket')
 
 
 ALLOW_UNKNOWN_PEER = os.environ.get('ALLOW_UNKNOWN_PEER') == '1'
-XDG_RUNTIME_DIR = Path(os.environ['XDG_RUNTIME_DIR'])
+SECRET_SOCKET_PATH = os.environ.get('SECRET_SOCKET_PATH')
+XDG_RUNTIME_DIR = os.environ.get('XDG_RUNTIME_DIR')
 
 
 class Secret:
@@ -176,7 +177,12 @@ def shutdown(signum, server):
 
 async def main():
     logging.basicConfig(level=logging.DEBUG)
-    sock_path = XDG_RUNTIME_DIR / 'secretsocket/.ss'
+    if SECRET_SOCKET_PATH:
+        sock_path = Path(SECRET_SOCKET_PATH)
+    elif XDG_RUNTIME_DIR:
+        sock_path = Path(XDG_RUNTIME_DIR) / 'secretsocket/.ss'
+    else:
+        sock_path = Path('/tmp/.secretsocket')
 
     if not sock_path.parent.exists():
         sock_path.parent.mkdir()