diff --git a/build.gradle b/build.gradle
index ae88392b4..6727778a6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -24,8 +24,7 @@ allprojects {
     } else {
         spotless {
             kotlin {
-                target '**/*.kt'
-                targetExclude("$layout.buildDirectory/**/*.kt")
+                target 'src/**/*.kt'
 
                 ktlint("1.3.1")
                 licenseHeaderFile rootProject.file('spotless/copyright.kt'), "package|import|class|object|sealed|open|interface|abstract "