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Diffstat (limited to 'base/gdevmr1.c')
-rw-r--r--base/gdevmr1.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/base/gdevmr1.c b/base/gdevmr1.c
index 2911f4f3..ed2faab9 100644
--- a/base/gdevmr1.c
+++ b/base/gdevmr1.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2020 Artifex Software, Inc.
+/* Copyright (C) 2001-2021 Artifex Software, Inc.
All Rights Reserved.
This software is provided AS-IS with no warranty, either express or
@@ -78,7 +78,7 @@ mem_mono_strip_copy_rop(gx_device * dev, const byte * sdata,
*/
if (invert)
- rop = byte_reverse_bits[rop] ^ 0xff;
+ rop = byte_reverse_bits[rop & 0xff] ^ 0xff;
return mem_mono_strip_copy_rop_dev(dev, sdata, sourcex, sraster, id,
scolors, textures, tcolors, x, y,