diff --git a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin-js-browser-project/app/build.gradle.kts b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin-js-browser-project/app/build.gradle.kts
index fb8bd7af5e1..0f1cbbd224e 100644
--- a/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin-js-browser-project/app/build.gradle.kts
+++ b/libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/kotlin-js-browser-project/app/build.gradle.kts
@@ -16,5 +16,11 @@ kotlin {
             }
         }
         binaries.executable()
+
+        compilations.named("main") {
+            packageJson {
+                customField("customField", mapOf("one" to 1, "two" to 2))
+            }
+        }
     }
 }
\ No newline at end of file