diff --git a/3_RootkitTechniques/3.3_set_root/ftrace_helper.h b/3_RootkitTechniques/3.3_set_root/ftrace_helper.h
index b3b7ed2..4e76d01 100644
--- a/3_RootkitTechniques/3.3_set_root/ftrace_helper.h
+++ b/3_RootkitTechniques/3.3_set_root/ftrace_helper.h
@@ -78,6 +78,7 @@
     kallsyms_lookup_name_t kallsyms_lookup_name;
     register_kprobe(&kp);
     kallsyms_lookup_name = (kallsyms_lookup_name_t) kp.addr;
+    unregister_kprobe(&kp);
 #endif
     hook->address = kallsyms_lookup_name(hook->name);