diff --git a/NEWS b/NEWS
index 2f1bc0107..d7c78c319 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,8 @@
 ver 0.20.20 (not yet released)
 * protocol
   - fix "modified-since" filter regression
+* decoder
+  - dsdiff, dsf: support more MIME types
 
 ver 0.20.19 (2018/04/26)
 * protocol
diff --git a/src/decoder/plugins/DsdiffDecoderPlugin.cxx b/src/decoder/plugins/DsdiffDecoderPlugin.cxx
index 2c371559b..b427ab10f 100644
--- a/src/decoder/plugins/DsdiffDecoderPlugin.cxx
+++ b/src/decoder/plugins/DsdiffDecoderPlugin.cxx
@@ -484,6 +484,8 @@ static const char *const dsdiff_suffixes[] = {
 
 static const char *const dsdiff_mime_types[] = {
 	"application/x-dff",
+	"audio/x-dff",
+	"audio/x-dsd",
 	nullptr
 };
 
diff --git a/src/decoder/plugins/DsfDecoderPlugin.cxx b/src/decoder/plugins/DsfDecoderPlugin.cxx
index 243d73ec5..1b008cc55 100644
--- a/src/decoder/plugins/DsfDecoderPlugin.cxx
+++ b/src/decoder/plugins/DsfDecoderPlugin.cxx
@@ -358,6 +358,8 @@ static const char *const dsf_suffixes[] = {
 
 static const char *const dsf_mime_types[] = {
 	"application/x-dsf",
+	"audio/x-dsf",
+	"audio/x-dsd",
 	nullptr
 };