diff --git a/lib/middleware/karma.js b/lib/middleware/karma.js
index 588fa609e..ebe492bb5 100644
--- a/lib/middleware/karma.js
+++ b/lib/middleware/karma.js
@@ -162,31 +162,27 @@ function createKarmaMiddleware (
 
           const scriptTags = []
           for (const file of files.included) {
-            let filePath = file.path
+            const urlPath = file.isUrl
+              ? file.path
+              : requestUrl === '/context.html'
+                ? filePathToUrlPath(file.path, basePath, urlRoot, proxyPath) + '?' + file.sha
+                : filePathToUrlPath(file.path, basePath, urlRoot, proxyPath)
             const fileType = helper.getFileType(file)
 
             if (helper.isDefined(fileType) && !FILE_TYPES.includes(fileType)) {
               log.warn(`Invalid file type (${fileType}), defaulting to js.`)
             }
 
-            if (!file.isUrl) {
-              filePath = filePathToUrlPath(filePath, basePath, urlRoot, proxyPath)
-
-              if (requestUrl === '/context.html') {
-                filePath += '?' + file.sha
-              }
-            }
-
             if (fileType === 'css') {
-              scriptTags.push(`<link type="text/css" href="${filePath}" rel="stylesheet">`)
+              scriptTags.push(`<link type="text/css" href="${urlPath}" rel="stylesheet">`)
             } else if (fileType === 'dom') {
               scriptTags.push(file.content)
             } else if (fileType === 'html') {
-              scriptTags.push(`<link href="${filePath}" rel="import">`)
+              scriptTags.push(`<link href="${urlPath}" rel="import">`)
             } else {
               const scriptType = (SCRIPT_TYPE[fileType] || 'text/javascript')
               const crossOriginAttribute = includeCrossOriginAttribute ? 'crossorigin="anonymous"' : ''
-              scriptTags.push(`<script type="${scriptType}" src="${filePath}" ${crossOriginAttribute}></script>`)
+              scriptTags.push(`<script type="${scriptType}" src="${urlPath}" ${crossOriginAttribute}></script>`)
             }
           }