diff --git a/libavcodec/mss4.c b/libavcodec/mss4.c
index f575387e6e..977e1e5552 100644
--- a/libavcodec/mss4.c
+++ b/libavcodec/mss4.c
@@ -126,7 +126,6 @@ static const uint8_t mss4_vec_entry_vlc_syms[2][9] = {
 
 typedef struct MSS4Context {
     AVFrame    pic;
-    DSPContext dsp;
 
     VLC        dc_vlc[2], ac_vlc[2];
     VLC        vec_entry_vlc[2];
diff --git a/libavcodec/ra288.c b/libavcodec/ra288.c
index e0e876dbd9..cb6eadba7d 100644
--- a/libavcodec/ra288.c
+++ b/libavcodec/ra288.c
@@ -39,7 +39,6 @@
 
 typedef struct {
     AVFrame frame;
-    DSPContext dsp;
     AVFloatDSPContext fdsp;
     DECLARE_ALIGNED(32, float,   sp_lpc)[FFALIGN(36, 16)];   ///< LPC coefficients for speech data (spec: A)
     DECLARE_ALIGNED(32, float, gain_lpc)[FFALIGN(10, 16)];   ///< LPC coefficients for gain        (spec: GB)
diff --git a/libavformat/asfdec.c b/libavformat/asfdec.c
index 136b6d6955..507e5c0117 100644
--- a/libavformat/asfdec.c
+++ b/libavformat/asfdec.c
@@ -108,7 +108,7 @@ static const ff_asf_guid stream_bitrate_guid = { /* (http://get.to/sdp) */
     if (!ff_guidcmp(g, &cmp)) \
         av_dlog(NULL, "(GUID: %s) ", # cmp)
 
-static void print_guid(const ff_asf_guid *g)
+static void print_guid(ff_asf_guid *g)
 {
     int i;
     PRINT_IF_GUID(g, ff_asf_header);