diff --git a/tests/ref/fate/source b/tests/ref/fate/source
index 9cd8b304a0..450e064e2e 100644
--- a/tests/ref/fate/source
+++ b/tests/ref/fate/source
@@ -3,6 +3,7 @@ cmdutils_common_opts.h
 compat/avisynth/windowsPorts/basicDataTypeConversions.h
 compat/avisynth/windowsPorts/windows2linux.h
 libavcodec/file_open.c
+libavcodec/interplayacm.c
 libavcodec/log2_tab.c
 libavcodec/mathops.c
 libavcodec/reverse.c