diff --git a/killstream/wait_kill_pause_notify_sub.py b/killstream/wait_kill_pause_notify_sub.py
index 7c875ef..3d845a9 100644
--- a/killstream/wait_kill_pause_notify_sub.py
+++ b/killstream/wait_kill_pause_notify_sub.py
@@ -27,7 +27,7 @@ x = 0
 try:
     print('Executing sub script.')
     while x < timeout and x is not None:
-        sleep(x)
+        sleep(interval)
         if kill_stream(check_session(sessionKey), interval, timeout) is not None:
             x += kill_stream(check_session(sessionKey), interval, timeout)
         else: