diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index eb7e505a..940f25fe 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -495,6 +495,8 @@ const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
 int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
 {
     switch (codec_id) {
+    case AV_CODEC_ID_DFPWM:
+        return 1;
     case AV_CODEC_ID_8SVX_EXP:
     case AV_CODEC_ID_8SVX_FIB:
     case AV_CODEC_ID_ADPCM_ARGO: