diff --git a/core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/receivers/ExtensionReceiver.java b/core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/receivers/ExtensionReceiver.java
index 76f56e4878b..02bccf0a901 100644
--- a/core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/receivers/ExtensionReceiver.java
+++ b/core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/receivers/ExtensionReceiver.java
@@ -37,6 +37,6 @@ public class ExtensionReceiver extends AbstractReceiverValue implements ThisRece
 
     @Override
     public String toString() {
-        return getType() + "Ext{" + descriptor + "}";
+        return getType() + ": Ext {" + descriptor + "}";
     }
 }