diff --git a/entity.hh b/entity.hh
index 946e9c2..d0d6dab 100644
--- a/entity.hh
+++ b/entity.hh
@@ -1,4 +1,4 @@
-#ifndef ENTITIY_HH_INCLUDED
+#ifndef ENTITY_HH_INCLUDED
 #define ENTITY_HH_INCLUDED
 
 #include <ACGL/Math/Math.hh>