diff --git a/test/configCases/assets/delete-asset/infrastructure-log.js b/test/configCases/assets/delete-asset/infrastructure-log.js
index 52c3b2b9918..9d9c6526e4a 100644
--- a/test/configCases/assets/delete-asset/infrastructure-log.js
+++ b/test/configCases/assets/delete-asset/infrastructure-log.js
@@ -1,3 +1,5 @@
 module.exports = [
+	// each time sets different assetsInfo object instance in webpack.config.js:54
+	// this prevents hit in inmemory cache
 	/^Pack got invalid because of write to: TerserWebpackPlugin|bundle0\.js$/
 ];
diff --git a/test/configCases/process-assets/html-plugin/infrastructure-log.js b/test/configCases/process-assets/html-plugin/infrastructure-log.js
index 7d9f5b745c0..0297c93d8a7 100644
--- a/test/configCases/process-assets/html-plugin/infrastructure-log.js
+++ b/test/configCases/process-assets/html-plugin/infrastructure-log.js
@@ -1,3 +1,5 @@
 module.exports = [
+	// each time returns different OriginalSource in webpack.config.js:78
+	// this prevents hit in inmemory cache
 	/^Pack got invalid because of write to: RealContentHashPlugin|analyse|index\.html$/
 ];