diff --git a/include/core.h b/include/core.h
index 4006d26..6055fe8 100644
--- a/include/core.h
+++ b/include/core.h
@@ -1,6 +1,7 @@
 // Tanabata file manager core lib
 // By Masahiko AMANO aka H1K0
 
+#pragma once
 #ifndef TANABATA_CORE_H
 #define TANABATA_CORE_H
 
diff --git a/include/tanabata.h b/include/tanabata.h
index 5178d24..c6bbe5d 100644
--- a/include/tanabata.h
+++ b/include/tanabata.h
@@ -1,6 +1,7 @@
 // Tanabata file manager lib
 // By Masahiko AMANO aka H1K0
 
+#pragma once
 #ifndef TANABATA_H
 #define TANABATA_H