diff --git a/kernel/src/task.rs b/kernel/src/task.rs
index 9aa67f8..7cf5c10 100644
--- a/kernel/src/task.rs
+++ b/kernel/src/task.rs
@@ -100,6 +100,14 @@ impl Executor {
 
                     if let Poll::Ready(()) = task.poll(&mut cx) {
                         self.tasks.remove(id);
+                        self.interrupt_lookup.map(move |pid|{
+                            if let Some(pid) = pid{
+                                if pid == id {
+                                    return None;
+                                }
+                            }
+                            return pid;
+                        });
                     }
                 }
             }
diff --git a/sysdata/programs/timer_test/src/main.hb b/sysdata/programs/timer_test/src/main.hb
index d359f3c..b2142ea 100644
--- a/sysdata/programs/timer_test/src/main.hb
+++ b/sysdata/programs/timer_test/src/main.hb
@@ -2,9 +2,7 @@ sleep := @use("../../../libraries/stn/src/sleep.hb")
 log := @use("../../../libraries/stn/src/log.hb")
 
 main := fn(): int {
-	loop {
-		log.info("BEFORE\0")
-		sleep.sleep_until_interrupt(32)
-		log.info("AFTER\0")
-	}
-}
+	log.info("BEFORE\0")
+	sleep.sleep_until_interrupt(32)
+	log.info("AFTER\0")
+}
\ No newline at end of file