diff --git a/tests/fate/vorbis.mak b/tests/fate/vorbis.mak
index 354cc57a0f..b9b7405e87 100644
--- a/tests/fate/vorbis.mak
+++ b/tests/fate/vorbis.mak
@@ -87,6 +87,7 @@ fate-vorbis-19: REF = $(SAMPLES)/vorbis/test-short2_small.pcm
 FATE_VORBIS += fate-vorbis-20
 fate-vorbis-20: CMD = pcm -i $(TARGET_SAMPLES)/vorbis/6.ogg
 fate-vorbis-20: REF = $(SAMPLES)/vorbis/6.pcm
+fate-vorbis-20: SIZE_TOLERANCE = 9948
 
 FATE_VORBIS_FFPROBE-$(CONFIG_OGG_DEMUXER) += fate-vorbis-1833-chapters
 fate-vorbis-1833-chapters: CMD = probechapters $(TARGET_SAMPLES)/vorbis/vorbis_chapter_extension_demo.ogg
diff --git a/tests/ref/fate/webm-dash-chapters b/tests/ref/fate/webm-dash-chapters
index 20ddfc031d..45368dca85 100644
--- a/tests/ref/fate/webm-dash-chapters
+++ b/tests/ref/fate/webm-dash-chapters
@@ -1,5 +1,5 @@
-e7fde2ecc9683a7a5296dab33b028653 *tests/data/fate/webm-dash-chapters.webm
-111220 tests/data/fate/webm-dash-chapters.webm
+f94bcae96166ad246a4b76605a4b3874 *tests/data/fate/webm-dash-chapters.webm
+111236 tests/data/fate/webm-dash-chapters.webm
 #extradata 0:     3469, 0xc6769ddc
 #tb 0: 1/1000
 #media_type 0: audio