diff --git a/checkstyle-tester/projects-to-test-on.properties b/checkstyle-tester/projects-to-test-on.properties
index 47d3ab0b..0fb79137 100644
--- a/checkstyle-tester/projects-to-test-on.properties
+++ b/checkstyle-tester/projects-to-test-on.properties
@@ -29,7 +29,7 @@ guava|git|https://github.com/google/guava|v28.2||
 #apache-ant|git|https://github.com/apache/ant|ANT_194|**/apache-ant/src/tests/**/*,**/apache-ant/src/etc/testcases/
 #apache-jsecurity|git|https://github.com/apache/jsecurity|c2ac5b90a467aedb04b52ae50a99e83207d847b3||
 #android-launcher|git|https://github.com/android/platform_packages_apps_launcher|android-2.1_r2.1p2||
-#apache-struts|git|https://github.com/apache/struts.git|master|**/apache-struts/**/resources/**/*
+#apache-struts|git|https://github.com/apache/struts.git|main|**/apache-struts/**/resources/**/*
 
 # Projects which contain a lot of labmda expressions
 #infinispan|git|https://github.com/infinispan/infinispan|7.2.5.Final||