diff --git a/vtm-playground/build.gradle b/vtm-playground/build.gradle
index b18f2f1b..a0458d78 100644
--- a/vtm-playground/build.gradle
+++ b/vtm-playground/build.gradle
@@ -29,3 +29,13 @@ run {
         args project.getProperty("args").split(",")
     }
 }
+
+task fatJar(type: Jar, dependsOn: classes) {
+    classifier = 'jar-with-dependencies'
+    from { configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) } }
+    exclude 'META-INF/*.DSA', 'META-INF/*.RSA', 'META-INF/*.SF'
+    manifest {
+        attributes 'Main-Class': "${mainClassName}"
+    }
+    with jar
+}
diff --git a/vtm-theme-comparator/build.gradle b/vtm-theme-comparator/build.gradle
index b95e8628..11f4506f 100644
--- a/vtm-theme-comparator/build.gradle
+++ b/vtm-theme-comparator/build.gradle
@@ -32,14 +32,14 @@ sourceSets {
     }
 }
 
+mainClassName = "org.oscim.theme.comparator.Main"
+
 task fatJar(type: Jar, dependsOn: classes) {
     classifier = 'jar-with-dependencies'
     from { configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) } }
     exclude 'META-INF/*.DSA', 'META-INF/*.RSA', 'META-INF/*.SF'
     manifest {
-        attributes('Main-Class': 'org.oscim.theme.comparator.Main')
+        attributes 'Main-Class': "${mainClassName}"
     }
     with jar
 }
-
-mainClassName = "org.oscim.theme.comparator.Main"