diff --git a/src/add-ons/accelerants/vesa/accelerant_protos.h b/src/add-ons/accelerants/vesa/accelerant_protos.h
index 81c566c69c..788c5cc7bd 100644
--- a/src/add-ons/accelerants/vesa/accelerant_protos.h
+++ b/src/add-ons/accelerants/vesa/accelerant_protos.h
@@ -46,9 +46,10 @@ status_t vesa_set_dpms_mode(uint32 dpmsFlags);
 
 // cursor
 status_t vesa_set_cursor_shape(uint16 width, uint16 height, uint16 hotX,
-	uint16 hotY, uint8 *andMask, uint8 *xorMask);
+	uint16 hotY, const uint8 *andMask, const uint8 *xorMask);
 status_t vesa_set_cursor_bitmap(uint16 width, uint16 height, uint16 hotX,
-	uint16 hotY, uint32 colorSpace, uint16 bytesPerRow, uint8* bitmapData);
+	uint16 hotY, color_space colorSpace, uint16 bytesPerRow,
+	const uint8* bitmapData);
 void vesa_move_cursor(uint16 x, uint16 y);
 void vesa_show_cursor(bool is_visible);