diff --git a/exec.py b/exec.py
index 9062146..769d392 100755
--- a/exec.py
+++ b/exec.py
@@ -257,7 +257,7 @@ def fun(self, cmd, shell_cmd, merged_env, ss):
         try:
             # Forward kwargs to AsyncProcess
             
-            self.proc = AsyncProcess(cmd, shell_cmd, merged_env, self, self.sl)
+            self.proc = AsyncProcess(cmd, shell_cmd, merged_env, self, **self.sl)
             
             self.text_queue_lock.acquire()
             try: