diff --git a/libavcodec/ac3_parser.c b/libavcodec/ac3_parser.c
index b844ec36c3..00aa372437 100644
--- a/libavcodec/ac3_parser.c
+++ b/libavcodec/ac3_parser.c
@@ -128,35 +128,6 @@ int ff_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo *hdr)
     return 0;
 }
 
-int ff_ac3_parse_header_full(GetBitContext *gbc, AC3HeaderInfo *hdr){
-    int ret, i;
-    ret = ff_ac3_parse_header(gbc, hdr);
-    if(!ret){
-        if(hdr->bitstream_id>10){
-            /* Enhanced AC-3 */
-            skip_bits(gbc, 5); // skip bitstream id
-
-            /* skip dialog normalization and compression gain */
-            for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
-                skip_bits(gbc, 5); // skip dialog normalization
-                if (get_bits1(gbc)) {
-                    skip_bits(gbc, 8); //skip Compression gain word
-                }
-            }
-            /* dependent stream channel map */
-            if (hdr->frame_type == EAC3_FRAME_TYPE_DEPENDENT && get_bits1(gbc)) {
-                    hdr->channel_map = get_bits(gbc, 16); //custom channel map
-                    return 0;
-            }
-        }
-        //default channel map based on acmod and lfeon
-        hdr->channel_map = ff_eac3_default_chmap[hdr->channel_mode];
-        if(hdr->lfe_on)
-            hdr->channel_map |= AC3_CHMAP_LFE;
-    }
-    return ret;
-}
-
 static int ac3_sync(uint64_t state, AACAC3ParseContext *hdr_info,
         int *need_next_header, int *new_frame_start)
 {
diff --git a/libavcodec/ac3_parser.h b/libavcodec/ac3_parser.h
index 2f4a2eeea5..50b70b08e5 100644
--- a/libavcodec/ac3_parser.h
+++ b/libavcodec/ac3_parser.h
@@ -38,15 +38,4 @@
  */
 int ff_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo *hdr);
 
-/**
- * Parse AC-3 frame header and sets channel_map
- * Parse the header up to the lfeon (channel_map in E-AC-3)
- * element, which is the first 52, 54 or 104 bits depending
- * on the audio coding mode.
- * @param[in]  gbc BitContext containing the first 54 bits of the frame.
- * @param[out] hdr Pointer to struct where header info is written.
- * @return value returned by ff_ac3_parse_header
- */
-int ff_ac3_parse_header_full(GetBitContext *gbc, AC3HeaderInfo *hdr);
-
 #endif /* AVCODEC_AC3_PARSER_H */