diff --git a/jps/model-impl/src/org/jetbrains/jps/model/library/impl/JpsLibraryImpl.java b/jps/model-impl/src/org/jetbrains/jps/model/library/impl/JpsLibraryImpl.java
index d515623dd348..24e3db789e30 100644
--- a/jps/model-impl/src/org/jetbrains/jps/model/library/impl/JpsLibraryImpl.java
+++ b/jps/model-impl/src/org/jetbrains/jps/model/library/impl/JpsLibraryImpl.java
@@ -168,4 +168,9 @@ public final class JpsLibraryImpl<P extends JpsElement> extends JpsNamedComposit
       }
     }
   }
+
+  @Override
+  public String toString() {
+    return "JpsLibraryImpl: "+getName();
+  }
 }
\ No newline at end of file
diff --git a/jps/model-impl/src/org/jetbrains/jps/model/module/impl/JpsModuleImpl.java b/jps/model-impl/src/org/jetbrains/jps/model/module/impl/JpsModuleImpl.java
index 492742b4d7fd..bda5582e6438 100644
--- a/jps/model-impl/src/org/jetbrains/jps/model/module/impl/JpsModuleImpl.java
+++ b/jps/model-impl/src/org/jetbrains/jps/model/module/impl/JpsModuleImpl.java
@@ -240,4 +240,9 @@ public class JpsModuleImpl<P extends JpsElement> extends JpsNamedCompositeElemen
   public JpsModuleType<P> getModuleType() {
     return myModuleType;
   }
+
+  @Override
+  public String toString() {
+    return "JpsModuleImpl: "+getName();
+  }
 }