diff --git a/libavcodec/c93.c b/libavcodec/c93.c
index 887a58599b..fd026acb8a 100644
--- a/libavcodec/c93.c
+++ b/libavcodec/c93.c
@@ -182,7 +182,7 @@ static int decode_frame(AVCodecContext *avctx, void *data,
                         int from_y = offset / WIDTH;
                         if (block_type == C93_4X4_FROM_CURR && from_y == y+j &&
                             (FFABS(from_x - x-i) < 4 || FFABS(from_x - x-i) > WIDTH-4)) {
-                            avpriv_request_sample(avctx, "block overlap %d %d %d %d\n", from_x, x+i, from_y, y+j);
+                            avpriv_request_sample(avctx, "block overlap %d %d %d %d", from_x, x+i, from_y, y+j);
                             return AVERROR_INVALIDDATA;
                         }
                         if ((ret = copy_block(avctx, &out[j*stride+i],
diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c
index ff835abe33..21ef43f303 100644
--- a/libavcodec/dvbsubdec.c
+++ b/libavcodec/dvbsubdec.c
@@ -839,7 +839,7 @@ static int save_subtitle_set(AVCodecContext *avctx, AVSubtitle *sub, int *got_ou
 
     /* Not touching AVSubtitles again*/
     if(sub->num_rects) {
-        avpriv_request_sample(ctx, "Different Version of Segment asked Twice\n");
+        avpriv_request_sample(ctx, "Different Version of Segment asked Twice");
         return AVERROR_PATCHWELCOME;
     }
     for (display = ctx->display_list; display; display = display->next) {
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c
index 25653e085a..66c5375f41 100644
--- a/libavcodec/jpeg2000dec.c
+++ b/libavcodec/jpeg2000dec.c
@@ -658,13 +658,13 @@ static int get_poc(Jpeg2000DecoderContext *s, int size, Jpeg2000POC *p)
     }
 
     if (elem_size > 7) {
-        avpriv_request_sample(s->avctx, "Fat POC not supported\n");
+        avpriv_request_sample(s->avctx, "Fat POC not supported");
         return AVERROR_PATCHWELCOME;
     }
 
     tmp.nb_poc = (size - 2) / elem_size;
     if (tmp.nb_poc > MAX_POCS) {
-        avpriv_request_sample(s->avctx, "Too many POCs (%d)\n", tmp.nb_poc);
+        avpriv_request_sample(s->avctx, "Too many POCs (%d)", tmp.nb_poc);
         return AVERROR_PATCHWELCOME;
     }
 
@@ -951,14 +951,14 @@ static int jpeg2000_decode_packet(Jpeg2000DecoderContext *s, Jpeg2000Tile *tile,
                 return newpasses;
             av_assert2(newpasses > 0);
             if (cblk->npasses + newpasses >= JPEG2000_MAX_PASSES) {
-                avpriv_request_sample(s->avctx, "Too many passes\n");
+                avpriv_request_sample(s->avctx, "Too many passes");
                 return AVERROR_PATCHWELCOME;
             }
             if ((llen = getlblockinc(s)) < 0)
                 return llen;
             if (cblk->lblock + llen + av_log2(newpasses) > 16) {
                 avpriv_request_sample(s->avctx,
-                                      "Block with length beyond 16 bits\n");
+                                      "Block with length beyond 16 bits");
                 return AVERROR_PATCHWELCOME;
             }
 
diff --git a/libavcodec/lcldec.c b/libavcodec/lcldec.c
index a774832434..c04ed5e6ca 100644
--- a/libavcodec/lcldec.c
+++ b/libavcodec/lcldec.c
@@ -512,7 +512,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
         avctx->pix_fmt = AV_PIX_FMT_YUV422P;
         av_log(avctx, AV_LOG_DEBUG, "Image type is YUV 4:2:2.\n");
         if (avctx->width % 4) {
-            avpriv_request_sample(avctx, "Unsupported dimensions\n");
+            avpriv_request_sample(avctx, "Unsupported dimensions");
             return AVERROR_INVALIDDATA;
         }
         break;
@@ -547,7 +547,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
 
     av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &subsample_h, &subsample_v);
     if (avctx->width % (1<<subsample_h) || avctx->height % (1<<subsample_v)) {
-        avpriv_request_sample(avctx, "Unsupported dimensions\n");
+        avpriv_request_sample(avctx, "Unsupported dimensions");
         return AVERROR_INVALIDDATA;
     }
 
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index ad618e25c9..899af4e6a6 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -289,7 +289,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
     width  = get_bits(&s->gb, 16);
 
     if (s->avctx->codec_id == AV_CODEC_ID_AMV && (height&15))
-        avpriv_request_sample(s->avctx, "non mod 16 height AMV\n");
+        avpriv_request_sample(s->avctx, "non mod 16 height AMV");
 
     // HACK for odd_height.mov
     if (s->interlaced && s->width == width && s->height == height + 1)
diff --git a/libavcodec/xan.c b/libavcodec/xan.c
index 7184faa957..662386af9a 100644
--- a/libavcodec/xan.c
+++ b/libavcodec/xan.c
@@ -263,7 +263,7 @@ static inline void xan_wc3_copy_pixel_run(XanContext *s, AVFrame *frame,
     prevframe_x = x + motion_x;
 
     if (prev_palette_plane == palette_plane && FFABS(curframe_index - prevframe_index) < pixel_count) {
-         avpriv_request_sample(s->avctx, "Overlapping copy\n");
+         avpriv_request_sample(s->avctx, "Overlapping copy");
          return ;
     }