1 files changed, 1 insertions, 1 deletions
diff --git a/libswscale/input.c b/libswscale/input.c
index 16314b6ca6..eed0f49b0a 100644
--- a/libswscale/input.c
+++ b/libswscale/input.c
@@ -1482,7 +1482,7 @@ av_cold void ff_sws_init_input_funcs(SwsContext *c)
         c->lumToYV12 = p010BEToY_c;
         break;
     }
-    if (c->alpPixBuf) {
+    if (c->needAlpha) {
         if (is16BPS(srcFormat) || isNBPS(srcFormat)) {
             if (HAVE_BIGENDIAN == !isBE(srcFormat))
                 c->alpToYV12 = bswap16Y_c;