diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index a343152..d583a52 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -473,7 +473,8 @@
                 } else if (s->bit_depth == 1 &&
                            s->color_type == PNG_COLOR_TYPE_GRAY) {
                     avctx->pix_fmt = PIX_FMT_MONOBLACK;
-                } else if (s->color_type == PNG_COLOR_TYPE_PALETTE) {
+                } else if (s->bit_depth == 8 &&
+                           s->color_type == PNG_COLOR_TYPE_PALETTE) {
                     avctx->pix_fmt = PIX_FMT_PAL8;
                 } else {
                     goto fail;