diff --git a/3_RootkitTechniques/3.3_set_root/ftrace_helper.h b/3_RootkitTechniques/3.3_set_root/ftrace_helper.h
index b2fe2e9..1ecdf76 100644
--- a/3_RootkitTechniques/3.3_set_root/ftrace_helper.h
+++ b/3_RootkitTechniques/3.3_set_root/ftrace_helper.h
@@ -33,7 +33,7 @@
  * protection and implement our own).
  * */
 #define USE_FENTRY_OFFSET 0
-#if !USE_ENTRY_OFFSET
+#if !USE_FENTRY_OFFSET
 #pragma GCC optimize("-fno-optimize-sibling-calls")
 #endif