X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fdraw%2Fao_draw_int.h;h=f353526d338be7558909cce1f2ec416eba7283f3;hb=c3dff4d7286991888bd79484c19adccc6926afc1;hp=433aa409b6e934bfdf7a1715d1262a7f8e26b444;hpb=fbbb3a06e42ec51d5d0582fe674528bd0e9e13f2;p=fw%2Faltos

diff --git a/src/draw/ao_draw_int.h b/src/draw/ao_draw_int.h
index 433aa409..f353526d 100644
--- a/src/draw/ao_draw_int.h
+++ b/src/draw/ao_draw_int.h
@@ -76,7 +76,7 @@ ao_bits_mask(int16_t x, int16_t w) {
     r = ao_right_mask((x)+n); \
     l = ao_left_mask(x); \
     if (l) { \
-	n -= AO_UNIT - ((x) & AO_MASK); \
+	n -= (int16_t) (AO_UNIT - ((x) & AO_MASK));	\
 	if (n < 0) { \
 	    n = 0; \
 	    l &= r; \