diff --git a/pkg/codecaac/mpeg4audioconfig_test.go b/pkg/codecaac/mpeg4audioconfig_test.go
index 2a8d209f..87065d52 100644
--- a/pkg/codecaac/mpeg4audioconfig_test.go
+++ b/pkg/codecaac/mpeg4audioconfig_test.go
@@ -11,6 +11,15 @@ var configCases = []struct {
 	enc  []byte
 	dec  MPEG4AudioConfig
 }{
+	{
+		name: "aac-lc 44.1khz mono",
+		enc:  []byte{0x12, 0x08, 0x56, 0xe5, 0x00},
+		dec: MPEG4AudioConfig{
+			Type:         MPEG4AudioTypeAACLC,
+			SampleRate:   44100,
+			ChannelCount: 1,
+		},
+	},
 	{
 		name: "aac-lc 48khz stereo",
 		enc:  []byte{17, 144},