diff --git a/internal/api/client/instance/instancepatch_test.go b/internal/api/client/instance/instancepatch_test.go
index f126ee6ae..0ba0f9881 100644
--- a/internal/api/client/instance/instancepatch_test.go
+++ b/internal/api/client/instance/instancepatch_test.go
@@ -113,6 +113,7 @@ func (suite *InstancePatchTestSuite) TestInstancePatch1() {
         "image/webp",
         "audio/mp2",
         "audio/mp3",
+        "audio/mpeg",
         "video/x-msvideo",
         "audio/flac",
         "audio/x-flac",
@@ -254,6 +255,7 @@ func (suite *InstancePatchTestSuite) TestInstancePatch2() {
         "image/webp",
         "audio/mp2",
         "audio/mp3",
+        "audio/mpeg",
         "video/x-msvideo",
         "audio/flac",
         "audio/x-flac",
@@ -395,6 +397,7 @@ func (suite *InstancePatchTestSuite) TestInstancePatch3() {
         "image/webp",
         "audio/mp2",
         "audio/mp3",
+        "audio/mpeg",
         "video/x-msvideo",
         "audio/flac",
         "audio/x-flac",
@@ -587,6 +590,7 @@ func (suite *InstancePatchTestSuite) TestInstancePatch6() {
         "image/webp",
         "audio/mp2",
         "audio/mp3",
+        "audio/mpeg",
         "video/x-msvideo",
         "audio/flac",
         "audio/x-flac",
@@ -750,6 +754,7 @@ func (suite *InstancePatchTestSuite) TestInstancePatch8() {
         "image/webp",
         "audio/mp2",
         "audio/mp3",
+        "audio/mpeg",
         "video/x-msvideo",
         "audio/flac",
         "audio/x-flac",
@@ -932,6 +937,7 @@ func (suite *InstancePatchTestSuite) TestInstancePatch9() {
         "image/webp",
         "audio/mp2",
         "audio/mp3",
+        "audio/mpeg",
         "video/x-msvideo",
         "audio/flac",
         "audio/x-flac",
diff --git a/internal/media/ffmpeg.go b/internal/media/ffmpeg.go
index c225d4378..6bf39cae2 100644
--- a/internal/media/ffmpeg.go
+++ b/internal/media/ffmpeg.go
@@ -377,12 +377,15 @@ func (res *result) GetFileType() (gtsmodel.FileType, string, string) {
 	case "mp3":
 		if len(res.audio) > 0 {
 			switch res.audio[0].codec {
+			case "mp1":
+				return gtsmodel.FileTypeAudio,
+					"audio/mpeg", "mp1"
 			case "mp2":
 				return gtsmodel.FileTypeAudio,
-					"audio/mp2", "mp2"
+					"audio/mpeg", "mp2"
 			case "mp3":
 				return gtsmodel.FileTypeAudio,
-					"audio/mp3", "mp3"
+					"audio/mpeg", "mp3"
 			}
 		}
 	case "asf":
diff --git a/internal/media/manager.go b/internal/media/manager.go
index 6aa13c17b..6d9c5629f 100644
--- a/internal/media/manager.go
+++ b/internal/media/manager.go
@@ -39,8 +39,9 @@ var SupportedMIMETypes = []string{
 	"image/gif",  // .gif
 	"image/webp", // .webp
 
-	"audio/mp2", // .mp2
-	"audio/mp3", // .mp3
+	"audio/mp2",  // .mp2
+	"audio/mp3",  // .mp3
+	"audio/mpeg", // .mp1, .mp2, .mp3
 
 	"video/x-msvideo", // .avi
 
diff --git a/internal/typeutils/internaltofrontend_test.go b/internal/typeutils/internaltofrontend_test.go
index 39a9bd9d4..005abf4eb 100644
--- a/internal/typeutils/internaltofrontend_test.go
+++ b/internal/typeutils/internaltofrontend_test.go
@@ -1960,6 +1960,7 @@ func (suite *InternalToFrontendTestSuite) TestInstanceV1ToFrontend() {
         "image/webp",
         "audio/mp2",
         "audio/mp3",
+        "audio/mpeg",
         "video/x-msvideo",
         "audio/flac",
         "audio/x-flac",
@@ -2105,6 +2106,7 @@ func (suite *InternalToFrontendTestSuite) TestInstanceV2ToFrontend() {
         "image/webp",
         "audio/mp2",
         "audio/mp3",
+        "audio/mpeg",
         "video/x-msvideo",
         "audio/flac",
         "audio/x-flac",