diff --git a/01_alapok/int_vector.h b/01_alapok/int_vector.h
index 246e818..9c8d0dd 100644
--- a/01_alapok/int_vector.h
+++ b/01_alapok/int_vector.h
@@ -1,5 +1,5 @@
-#ifndef IntVector_H
-#define IntVector_H
+#ifndef INT_VECTOR_H
+#define INT_VECTOR_H
 
 class IntVector {