diff --git a/core/descriptors/src/org/jetbrains/jet/renderer/DescriptorRendererImpl.java b/core/descriptors/src/org/jetbrains/jet/renderer/DescriptorRendererImpl.java
index 2e957be354d..d400912ba99 100644
--- a/core/descriptors/src/org/jetbrains/jet/renderer/DescriptorRendererImpl.java
+++ b/core/descriptors/src/org/jetbrains/jet/renderer/DescriptorRendererImpl.java
@@ -345,7 +345,7 @@ public class DescriptorRendererImpl implements DescriptorRenderer {
             return lowerRendered + "!";
         }
 
-        String kotlinPrefix = "kotlin.";
+        String kotlinPrefix = !shortNames ? "kotlin." : "";
         String mutablePrefix = "Mutable";
         // java.util.List<Foo> -> (Mutable)List<Foo!>!
         String simpleCollection = replacePrefixes(