diff --git a/libraries/tools/kotlin-gradle-plugin/src/test/resources/testProject/alfa/build.gradle b/libraries/tools/kotlin-gradle-plugin/src/test/resources/testProject/alfa/build.gradle
index 451ac3de6c0..d11a39e7e2b 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/test/resources/testProject/alfa/build.gradle
+++ b/libraries/tools/kotlin-gradle-plugin/src/test/resources/testProject/alfa/build.gradle
@@ -14,6 +14,7 @@ buildscript {
 }
 
 apply plugin: "kotlin"
+apply plugin: "java"
 
 sourceSets {
  deploy