diff --git a/goobi-viewer-core/src/main/java/io/goobi/viewer/model/search/BrowseElement.java b/goobi-viewer-core/src/main/java/io/goobi/viewer/model/search/BrowseElement.java
index af166358c7d..8514cb59b2e 100644
--- a/goobi-viewer-core/src/main/java/io/goobi/viewer/model/search/BrowseElement.java
+++ b/goobi-viewer-core/src/main/java/io/goobi/viewer/model/search/BrowseElement.java
@@ -22,10 +22,6 @@
 package io.goobi.viewer.model.search;
 
 import java.io.Serializable;
-import java.net.MalformedURLException;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.net.URL;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -534,16 +530,12 @@ void addSortFieldsToMetadata(StructElement structElement, List<StringPair> sortF
      * @should return empty string for unknown file extensions
      */
     static String getMimeTypeFromExtension(String filename) {
-        try {
-            URL fileUrl = new URI(filename).toURL();
-            ImageFileFormat format = ImageFileFormat.getImageFileFormatFromFileExtension(fileUrl.getPath());
-            if (format != null) {
-                return format.getMimeType();
-            }
-        } catch (MalformedURLException | URISyntaxException e) {
-            logger.warn(e.getMessage());
+        ImageFileFormat format = ImageFileFormat.getImageFileFormatFromFileExtension(filename);
+        if (format != null) {
+            return format.getMimeType();
+        } else {
+            return "";
         }
-        return "";
     }
 
     /**