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-rw-r--r--hw/display/cirrus_vga_rop.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/display/cirrus_vga_rop.h b/hw/display/cirrus_vga_rop.h
index c61a677353..0841b9efa9 100644
--- a/hw/display/cirrus_vga_rop.h
+++ b/hw/display/cirrus_vga_rop.h
@@ -219,7 +219,7 @@ glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
srcpitch += bltwidth;
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x+=2) {
- ROP_OP_TR_16(s, dstaddr, cirrus_src16(s, srcaddr), transp);
+ ROP_OP_TR_16(s, dstaddr - 1, cirrus_src16(s, srcaddr - 1), transp);
dstaddr -= 2;
srcaddr -= 2;
}