diff --git a/Plugin/Skin.h b/Plugin/Skin.h
index 9f9368d175c9e290a36bfc2736d20c3175a1529a..4ad757da3f0a634f6dd56b28ef00fba4846a3d62 100644
--- a/Plugin/Skin.h
+++ b/Plugin/Skin.h
@@ -1,5 +1,5 @@
 #ifndef _SKIN_H_
-#define _SKIN_H
+#define _SKIN_H_
 
 extern "C"
 {