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-rw-r--r--ui/vnc-enc-tight.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ui/vnc-enc-tight.c b/ui/vnc-enc-tight.c
index 8ca55702b1..6f046f86c5 100644
--- a/ui/vnc-enc-tight.c
+++ b/ui/vnc-enc-tight.c
@@ -1524,7 +1524,7 @@ static int send_sub_rect(VncState *vs, int x, int y, int w, int h)
colors = tight_fill_palette(vs, x, y, w * h, &fg, &bg, &palette);
#ifdef CONFIG_VNC_JPEG
- if (vs->tight.quality != -1) {
+ if (vs->tight.quality != (uint8_t)-1) {
ret = send_sub_rect_jpeg(vs, x, y, w, h, bg, fg, colors, palette);
} else {
ret = send_sub_rect_nojpeg(vs, x, y, w, h, bg, fg, colors, palette);