diff --git a/src/conio/mouse.h b/src/conio/mouse.h
index bd5e4fcdeba17e0555d85a5fcc81f146c4257a1a..b87a463fe6c9afd126ce21cd2155358d648c9952 100644
--- a/src/conio/mouse.h
+++ b/src/conio/mouse.h
@@ -51,7 +51,7 @@ struct mouse_event {
 #define CIOLIB_BUTTON(x)	(1<<(x-1))
 
 enum {
-	 CIOLIB_MOUSE_MOVE
+	 CIOLIB_MOUSE_MOVE				/* 0 */
 	,CIOLIB_BUTTON_1_PRESS
 	,CIOLIB_BUTTON_1_RELEASE
 	,CIOLIB_BUTTON_1_CLICK
@@ -61,7 +61,7 @@ enum {
 	,CIOLIB_BUTTON_1_DRAG_START
 	,CIOLIB_BUTTON_1_DRAG_MOVE
 	,CIOLIB_BUTTON_1_DRAG_END
-	,CIOLIB_BUTTON_2_PRESS
+	,CIOLIB_BUTTON_2_PRESS			/* 10 */
 	,CIOLIB_BUTTON_2_RELEASE
 	,CIOLIB_BUTTON_2_CLICK
 	,CIOLIB_BUTTON_2_DBL_CLICK
@@ -71,14 +71,14 @@ enum {
 	,CIOLIB_BUTTON_2_DRAG_MOVE
 	,CIOLIB_BUTTON_2_DRAG_END
 	,CIOLIB_BUTTON_3_PRESS
-	,CIOLIB_BUTTON_3_RELEASE
+	,CIOLIB_BUTTON_3_RELEASE		/* 20 */
 	,CIOLIB_BUTTON_3_CLICK
 	,CIOLIB_BUTTON_3_DBL_CLICK
 	,CIOLIB_BUTTON_3_TRPL_CLICK
 	,CIOLIB_BUTTON_3_QUAD_CLICK
 	,CIOLIB_BUTTON_3_DRAG_START
 	,CIOLIB_BUTTON_3_DRAG_MOVE
-	,CIOLIB_BUTTON_3_DRAG_END
+	,CIOLIB_BUTTON_3_DRAG_END		/* 27 */
 };
 
 #define CIOLIB_BUTTON_PRESS(x)		((x-1)*9+1)