diff --git a/disk/disk_darwin_cgo.go b/disk/disk_darwin_cgo.go
index 623c5fd..8a1848e 100644
--- a/disk/disk_darwin_cgo.go
+++ b/disk/disk_darwin_cgo.go
@@ -7,7 +7,7 @@ package disk
 #cgo LDFLAGS: -framework CoreFoundation -framework IOKit
 #include <stdint.h>
 #include <CoreFoundation/CoreFoundation.h>
-#include "disk_darwin.h"
+#include "iostat_darwin.h"
 */
 import "C"
 
diff --git a/disk/disk_darwin.c b/disk/iostat_darwin.c
similarity index 99%
rename from disk/disk_darwin.c
rename to disk/iostat_darwin.c
index 198d3d1..9619c6f 100644
--- a/disk/disk_darwin.c
+++ b/disk/iostat_darwin.c
@@ -1,7 +1,7 @@
 // https://github.com/lufia/iostat/blob/9f7362b77ad333b26c01c99de52a11bdb650ded2/iostat_darwin.c
 #include <stdint.h>
 #include <CoreFoundation/CoreFoundation.h>
-#include "disk_darwin.h"
+#include "iostat_darwin.h"
 
 #define IOKIT	1	/* to get io_name_t in device_types.h */
 
diff --git a/disk/disk_darwin.h b/disk/iostat_darwin.h
similarity index 100%
rename from disk/disk_darwin.h
rename to disk/iostat_darwin.h