diff --git a/tests/ImageSharp.Tests/xunit.runner.json b/tests/ImageSharp.Tests/xunit.runner.json
index d7b466d09..749ece438 100644
--- a/tests/ImageSharp.Tests/xunit.runner.json
+++ b/tests/ImageSharp.Tests/xunit.runner.json
@@ -1,6 +1,5 @@
 {
   "shadowCopy": false,
   "methodDisplay": "method",
-  "diagnosticMessages": true,
-  "preEnumerateTheories": false
+  "diagnosticMessages": true
 }