diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/binding/PsiCodegenPredictor.java b/compiler/backend/src/org/jetbrains/jet/codegen/binding/PsiCodegenPredictor.java
index 2657308862a..09947049a9f 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/binding/PsiCodegenPredictor.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/binding/PsiCodegenPredictor.java
@@ -33,6 +33,7 @@ import org.jetbrains.jet.lang.resolve.BindingContextUtils;
 import org.jetbrains.jet.lang.resolve.BindingTrace;
 import org.jetbrains.jet.lang.resolve.java.JvmAbi;
 import org.jetbrains.jet.lang.resolve.java.JvmClassName;
+import org.jetbrains.jet.lang.resolve.java.PackageClassUtils;
 import org.jetbrains.jet.lang.resolve.kotlin.PackagePartClassUtils;
 import org.jetbrains.jet.lang.resolve.name.FqName;
 import org.jetbrains.jet.lang.resolve.name.Name;
@@ -42,7 +43,6 @@ import java.util.ArrayList;
 import java.util.Collection;
 
 import static org.jetbrains.jet.lang.resolve.BindingContextUtils.descriptorToDeclaration;
-import static org.jetbrains.jet.lang.resolve.java.PackageClassUtils.getPackageClassFqName;
 
 public final class PsiCodegenPredictor {
     private PsiCodegenPredictor() {
@@ -87,9 +87,8 @@ public final class PsiCodegenPredictor {
             FqName packageFqName = declaration.getContainingJetFile().getPackageFqName();
 
             if (declaration instanceof JetNamedFunction) {
-                FqName packageClass = getPackageClassFqName(packageFqName);
                 Name name = ((JetNamedFunction) declaration).getNameAsName();
-                return name == null ? null : AsmUtil.internalNameByFqNameWithoutInnerClasses(packageClass) + "$" + name.asString();
+                return name == null ? null : PackageClassUtils.getPackageClassInternalName(packageFqName) + "$" + name.asString();
             }
 
             parentInternalName = AsmUtil.internalNameByFqNameWithoutInnerClasses(packageFqName);
diff --git a/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java b/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
index 6dee5371442..9531769d875 100644
--- a/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
+++ b/compiler/backend/src/org/jetbrains/jet/codegen/state/JetTypeMapper.java
@@ -143,7 +143,7 @@ public class JetTypeMapper {
             }
         }
 
-        return PackageClassUtils.getPackageClassFqName(packageFragment.getFqName()).asString().replace('.', '/');
+        return PackageClassUtils.getPackageClassInternalName(packageFragment.getFqName());
     }
 
     @NotNull
diff --git a/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/PackageClassUtils.java b/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/PackageClassUtils.java
index 72b5c45e4f5..bfa1a3b6ed2 100644
--- a/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/PackageClassUtils.java
+++ b/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/PackageClassUtils.java
@@ -46,6 +46,11 @@ public final class PackageClassUtils {
         return packageFQN.child(Name.identifier(getPackageClassName(packageFQN)));
     }
 
+    @NotNull
+    public static String getPackageClassInternalName(@NotNull FqName packageFQN) {
+        return JvmClassName.byFqNameWithoutInnerClasses(getPackageClassFqName(packageFQN)).getInternalName();
+    }
+
     public static boolean isPackageClassFqName(@NotNull FqName fqName) {
         return !fqName.isRoot() && getPackageClassFqName(fqName.parent()).equals(fqName);
     }
diff --git a/idea/src/org/jetbrains/jet/plugin/debugger/evaluate/KotlinEvaluationBuilder.kt b/idea/src/org/jetbrains/jet/plugin/debugger/evaluate/KotlinEvaluationBuilder.kt
index 4ef6861a05d..b13a3920367 100644
--- a/idea/src/org/jetbrains/jet/plugin/debugger/evaluate/KotlinEvaluationBuilder.kt
+++ b/idea/src/org/jetbrains/jet/plugin/debugger/evaluate/KotlinEvaluationBuilder.kt
@@ -270,7 +270,7 @@ package packageForDebugger
 !FUNCTION!
 """
 
-private val packageInternalName = PackageClassUtils.getPackageClassFqName(FqName("packageForDebugger")).asString().replace(".", "/")
+private val packageInternalName = PackageClassUtils.getPackageClassInternalName(FqName("packageForDebugger"))
 
 private fun createFileForDebugger(codeFragment: JetCodeFragment,
                                   extractedFunction: JetNamedFunction