diff --git a/extlib/benz/xfile.c b/extlib/benz/file.c
similarity index 100%
rename from extlib/benz/xfile.c
rename to extlib/benz/file.c
diff --git a/extlib/benz/include/picrin.h b/extlib/benz/include/picrin.h
index d0dedfa5..6bda3be1 100644
--- a/extlib/benz/include/picrin.h
+++ b/extlib/benz/include/picrin.h
@@ -42,7 +42,7 @@ extern "C" {
 
 #include "picrin/xvect.h"
 #include "picrin/xhash.h"
-#include "picrin/xfile.h"
+#include "picrin/file.h"
 
 #include "picrin/value.h"
 
diff --git a/extlib/benz/include/picrin/xfile.h b/extlib/benz/include/picrin/file.h
similarity index 100%
rename from extlib/benz/include/picrin/xfile.h
rename to extlib/benz/include/picrin/file.h