diff --git a/files/file.go b/files/file.go
index 23874af8..d58b2a34 100644
--- a/files/file.go
+++ b/files/file.go
@@ -175,9 +175,6 @@ func (i *FileInfo) detectType(modify, saveContent bool) error {
 	case strings.HasPrefix(mimetype, "image"):
 		i.Type = "image"
 		return nil
-	case is3DModelFile(i.Extension):
-		i.Type = "3dobject"
-		return nil
 	case isBinary(buffer[:n], n) || i.Size > 10*1024*1024: // 10 MB
 		i.Type = "blob"
 		return nil
@@ -202,21 +199,6 @@ func (i *FileInfo) detectType(modify, saveContent bool) error {
 	return nil
 }
 
-func is3DModelFile(ext string) bool {
-	switch strings.ToLower(ext) {
-	case
-		".obj",
-		".json",
-		".stl",
-		".dae",
-		".ply",
-		".fbx",
-		".gltf":
-		return true
-	}
-	return false
-}
-
 func (i *FileInfo) detectSubtitles() {
 	if i.Type != "video" {
 		return
diff --git a/frontend/src/components/files/Preview.vue b/frontend/src/components/files/Preview.vue
index 4a49a2ff..d7f69756 100644
--- a/frontend/src/components/files/Preview.vue
+++ b/frontend/src/components/files/Preview.vue
@@ -38,7 +38,7 @@
     <template v-if="!loading">
       <div class="preview">
         <ExtendedImage v-if="req.type == 'image'" :src="raw"></ExtendedImage>
-        <ThreeViewer v-else-if="req.type == '3dobject'" :src="raw"></ThreeViewer>
+        <ThreeViewer v-else-if="is3DModelFile(req)" :src="raw"></ThreeViewer>
         <audio v-else-if="req.type == 'audio'" :src="raw" autoplay controls></audio>
         <video v-else-if="req.type == 'video'" :src="raw" autoplay controls>
           <track
@@ -76,7 +76,6 @@ import ExtendedImage from './ExtendedImage'
 import ThreeViewer from './ThreeViewer'
 
 const mediaTypes = [
-  "3dobject",
   "image",
   "video",
   "audio",
@@ -234,6 +233,9 @@ export default {
     },
     toggleSize () {
       this.fullSize = !this.fullSize
+    },
+    is3DModelFile (req) {
+      return ThreeViewer.methods.is3DModelFile(req)
     }
   }
 }
diff --git a/frontend/src/components/files/ThreeViewer.vue b/frontend/src/components/files/ThreeViewer.vue
index 95de78ab..05771f09 100644
--- a/frontend/src/components/files/ThreeViewer.vue
+++ b/frontend/src/components/files/ThreeViewer.vue
@@ -22,6 +22,8 @@ import { mapState } from 'vuex'
 import url from '@/utils/url'
 import { baseURL } from '@/utils/constants'
 
+const ThreeDModelExtRegExp = new RegExp(/\.(obj|stl|dae|ply|fbx|gltf)$/);
+
 export default {
   components: {
     ModelCollada,
@@ -56,6 +58,9 @@ export default {
     this.rotating = true
   },
   methods: {
+    is3DModelFile (req) {
+      return ThreeDModelExtRegExp.test(req.extension);
+    },
     onLoad () {
       this.loadingPreview = false
       this.rotate();