diff --git a/{{cookiecutter.repo_name}}/build.gradle b/{{cookiecutter.repo_name}}/build.gradle
index b9a0cd6fea77f7f5d1deee56f09b7360e4e3f7d3..e6415e32a68ebef9084a5c9f1f8a1333cbcd6889 100644
--- a/{{cookiecutter.repo_name}}/build.gradle
+++ b/{{cookiecutter.repo_name}}/build.gradle
@@ -13,7 +13,7 @@ ext {
 }
 
 // set the main class name for `gradle run`
-application.mainClassName = "${mainClassName}"
+application.mainClass = "${mainClassName}"
 
 java.toolchain.languageVersion = JavaLanguageVersion.of(11)