diff --git a/include/picrin/port.h b/include/picrin/port.h
index 0340b3a3..c54888da 100644
--- a/include/picrin/port.h
+++ b/include/picrin/port.h
@@ -7,7 +7,7 @@ enum pic_port_flag {
   PIC_PORT_IN = 1,
   PIC_PORT_OUT = 2,
   PIC_PORT_TEXT = 4,
-  PIC_PORT_BINARY = 8
+  PIC_PORT_BINARY = 8,
 };
 
 enum pic_port_status {