diff --git a/js/js.ast/src/org/jetbrains/kotlin/js/backend/ast/JsPropertyInitializer.java b/js/js.ast/src/org/jetbrains/kotlin/js/backend/ast/JsPropertyInitializer.java
index a65449ea5c6..586c1c3c5d0 100644
--- a/js/js.ast/src/org/jetbrains/kotlin/js/backend/ast/JsPropertyInitializer.java
+++ b/js/js.ast/src/org/jetbrains/kotlin/js/backend/ast/JsPropertyInitializer.java
@@ -59,4 +59,9 @@ public class JsPropertyInitializer extends SourceInfoAwareJsNode {
     public JsPropertyInitializer deepCopy() {
         return new JsPropertyInitializer(labelExpr.deepCopy(), valueExpr.deepCopy()).withMetadataFrom(this);
     }
+
+    @Override
+    public String toString() {
+        return labelExpr + ": " + valueExpr;
+    }
 }