diff --git a/libavcodec/escape124.c b/libavcodec/escape124.c
index b51206a0b5..af14e0d7e5 100644
--- a/libavcodec/escape124.c
+++ b/libavcodec/escape124.c
@@ -195,15 +195,6 @@ static const uint16_t mask_matrix[] = {0x1,   0x2,   0x10,   0x20,
                                        0x100, 0x200, 0x1000, 0x2000,
                                        0x400, 0x800, 0x4000, 0x8000};
 
-/**
- * Decode a single frame
- * @param avctx decoder context
- * @param data decoded frame
- * @param data_size size of the decoded frame
- * @param buf input buffer
- * @param buf_size input buffer size
- * @return 0 success, -1 on error
- */
 static int escape124_decode_frame(AVCodecContext *avctx,
                                   void *data, int *data_size,
                                   AVPacket *avpkt)
diff --git a/libavcodec/fraps.c b/libavcodec/fraps.c
index 0829ac7e74..e9e6ecf450 100644
--- a/libavcodec/fraps.c
+++ b/libavcodec/fraps.c
@@ -118,15 +118,6 @@ static int fraps2_decode_plane(FrapsContext *s, uint8_t *dst, int stride, int w,
     return 0;
 }
 
-/**
- * decode a frame
- * @param avctx codec context
- * @param data output AVFrame
- * @param data_size size of output data or 0 if no picture is returned
- * @param buf input data frame
- * @param buf_size size of input data frame
- * @return number of consumed bytes on success or negative if decode fails
- */
 static int decode_frame(AVCodecContext *avctx,
                         void *data, int *data_size,
                         AVPacket *avpkt)
diff --git a/libavcodec/rl2.c b/libavcodec/rl2.c
index 1174c35d51..ba99fb91b8 100644
--- a/libavcodec/rl2.c
+++ b/libavcodec/rl2.c
@@ -169,15 +169,6 @@ static av_cold int rl2_decode_init(AVCodecContext *avctx)
 }
 
 
-/**
- * Decode a single frame
- * @param avctx decoder context
- * @param data decoded frame
- * @param data_size size of the decoded frame
- * @param buf input buffer
- * @param buf_size input buffer size
- * @return 0 success, -1 on error
- */
 static int rl2_decode_frame(AVCodecContext *avctx,
                               void *data, int *data_size,
                               AVPacket *avpkt)