diff --git a/compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java b/compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java
index b666e17b0ab..3fbdd4f186f 100644
--- a/compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java
+++ b/compiler/frontend/src/org/jetbrains/jet/resolve/DescriptorRenderer.java
@@ -298,12 +298,13 @@ public class DescriptorRenderer implements Renderer<DeclarationDescriptor> {
                     builder.append("final");
                     break;
                 case OPEN:
-                    builder.append("open ");
+                    builder.append("open");
                     break;
                 case ABSTRACT:
-                    builder.append("abstract ");
+                    builder.append("abstract");
                     break;
             }
+            builder.append(" ");
         }
 
         @Override