diff --git a/toa.py b/toa.py
index 23bfa2f..a1811dc 100644
--- a/toa.py
+++ b/toa.py
@@ -28,7 +28,7 @@ class UserOption:
 
 def get_current_cgroup():
     if os.path.exists('/sys/fs/cgroup/unified/'):
-        return '/sys/fs/cgroup/unified'
+        return '/sys/fs/cgroup/unified/'
 
     with open('/proc/self/cgroup', 'r') as file:
         lines = file.readlines()
@@ -134,4 +134,4 @@ Usage:
           attach_bpf(new_bpf_content,cgroup)   
 
     elif args.method == 'detach':
-        detach_bpf(cgroup)
\ No newline at end of file
+        detach_bpf(cgroup)