diff --git a/compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/JetLightClass.java b/compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/JetLightClass.java
index cd9b022131f..2f432a6a288 100644
--- a/compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/JetLightClass.java
+++ b/compiler/jet.as.java.psi/src/org/jetbrains/jet/asJava/JetLightClass.java
@@ -46,7 +46,9 @@ import org.jetbrains.jet.lang.psi.JetClass;
 import org.jetbrains.jet.lang.psi.JetFile;
 import org.jetbrains.jet.lang.psi.JetFunction;
 import org.jetbrains.jet.lang.psi.JetPsiUtil;
-import org.jetbrains.jet.lang.resolve.java.*;
+import org.jetbrains.jet.lang.resolve.java.AnalyzerFacadeForJVM;
+import org.jetbrains.jet.lang.resolve.java.JetFilesProvider;
+import org.jetbrains.jet.lang.resolve.java.JetJavaMirrorMarker;
 import org.jetbrains.jet.lang.resolve.name.FqName;
 import org.jetbrains.jet.plugin.JetLanguage;
 import org.jetbrains.jet.util.QualifiedNamesUtil;
@@ -236,6 +238,30 @@ public class JetLightClass extends AbstractLightClass implements JetJavaMirrorMa
         }
     }
 
+    @Override
+    public int hashCode() {
+        int result = getManager().hashCode();
+        result = 31 * result + file.hashCode();
+        result = 31 * result + qualifiedName.hashCode();
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) return true;
+        if (obj == null || getClass() != obj.getClass()) {
+            return false;
+        }
+
+        JetLightClass lightClass = (JetLightClass) obj;
+
+        if (getManager() != lightClass.getManager()) return false;
+        if (!file.equals(lightClass.file)) return false;
+        if (!qualifiedName.equals(lightClass.qualifiedName)) return false;
+
+        return true;
+    }
+
     public static JetLightClass wrapDelegate(JetClass jetClass) {
         return new JetLightClass(jetClass.getManager(), (JetFile) jetClass.getContainingFile(), JetPsiUtil.getFQName(jetClass));
     }