diff --git a/libavcodec/tiffenc.c b/libavcodec/tiffenc.c
index d0614f5faf..2d3442943a 100644
--- a/libavcodec/tiffenc.c
+++ b/libavcodec/tiffenc.c
@@ -255,12 +255,9 @@ static int encode_frame(AVCodecContext * avctx, unsigned char *buf,
         s->photometric_interpretation = 3;
         break;
     case PIX_FMT_MONOBLACK:
-        s->bpp = 1;
-        s->photometric_interpretation = 1;
-        break;
     case PIX_FMT_MONOWHITE:
         s->bpp = 1;
-        s->photometric_interpretation = 0;
+        s->photometric_interpretation = avctx->pix_fmt == PIX_FMT_MONOBLACK;
         break;
     case PIX_FMT_YUV420P:
     case PIX_FMT_YUV422P: