diff --git a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinProjectExtension.kt b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinProjectExtension.kt
index 8bbc8694df5..64d68b53ec6 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinProjectExtension.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/dsl/KotlinProjectExtension.kt
@@ -206,7 +206,7 @@ abstract class KotlinJsProjectExtension(project: Project) :
             targetSetObservers.forEach { it(value) }
         }
 
-    internal fun registerTargetObserver(observer: (KotlinJsTargetDsl?) -> Unit) {
+    fun registerTargetObserver(observer: (KotlinJsTargetDsl?) -> Unit) {
         targetSetObservers.add(observer)
     }