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-rw-r--r--graphics/transparent_surface.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/graphics/transparent_surface.cpp b/graphics/transparent_surface.cpp
index 992a5dc879..19e7655a93 100644
--- a/graphics/transparent_surface.cpp
+++ b/graphics/transparent_surface.cpp
@@ -116,7 +116,7 @@ void doBlitBinaryFast(byte *ino, byte *outo, uint32 width, uint32 height, uint32
in = ino;
for (uint32 j = 0; j < width; j++) {
uint32 pix = *(uint32 *)in;
- int a = (pix >> kAModShift) & 0xff;
+ int a = in[kAIndex];
if (a != 0) { // Full opacity (Any value not exactly 0 is Opaque here)
*(uint32 *)out = pix;