diff --git a/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/descriptor/ClassDescriptorFromJvmBytecode.java b/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/descriptor/ClassDescriptorFromJvmBytecode.java
index 60e2ecb4102..3becdcffc01 100644
--- a/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/descriptor/ClassDescriptorFromJvmBytecode.java
+++ b/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/descriptor/ClassDescriptorFromJvmBytecode.java
@@ -33,8 +33,9 @@ import java.util.Collection;
  */
 public class ClassDescriptorFromJvmBytecode extends MutableClassDescriptorLite {
     private JetType functionTypeForSamInterface;
-
     private JavaClassNonStaticMembersScope scopeForConstructorResolve;
+    private ConstructorDescriptor primaryConstructor;
+    private Collection<ConstructorDescriptor> constructors;
 
     public ClassDescriptorFromJvmBytecode(
             @NotNull DeclarationDescriptor containingDeclaration,
@@ -45,18 +46,31 @@ public class ClassDescriptorFromJvmBytecode extends MutableClassDescriptorLite {
         super(containingDeclaration, name, kind, isInner);
     }
 
-
     @NotNull
     @Override
     public Collection<ConstructorDescriptor> getConstructors() {
         assert scopeForConstructorResolve != null;
-        return scopeForConstructorResolve.getConstructors();
+        if (constructors == null) {
+            constructors = scopeForConstructorResolve.getConstructors();
+        }
+        return constructors;
     }
 
     @Nullable
     @Override
     public ConstructorDescriptor getUnsubstitutedPrimaryConstructor() {
-        return scopeForConstructorResolve.getPrimaryConstructor();
+        if (primaryConstructor == null) {
+            for (ConstructorDescriptor constructor : getConstructors()) {
+                if (constructor.isPrimary()) {
+                    if (primaryConstructor != null) {
+                        throw new IllegalStateException(
+                                "Class has more than one primary constructor: " + primaryConstructor + "\n" + constructor);
+                    }
+                    primaryConstructor = constructor;
+                }
+            }
+        }
+        return primaryConstructor;
     }
 
     public void setScopeForConstructorResolve(@NotNull JavaClassNonStaticMembersScope scopeForConstructorResolve) {
diff --git a/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/scope/JavaClassNonStaticMembersScope.java b/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/scope/JavaClassNonStaticMembersScope.java
index 0f4d47e6d41..bd36883dca4 100644
--- a/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/scope/JavaClassNonStaticMembersScope.java
+++ b/core/descriptor.loader.java/src/org/jetbrains/jet/lang/resolve/java/scope/JavaClassNonStaticMembersScope.java
@@ -17,7 +17,6 @@
 package org.jetbrains.jet.lang.resolve.java.scope;
 
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
 import org.jetbrains.jet.lang.descriptors.ConstructorDescriptor;
 import org.jetbrains.jet.lang.resolve.java.resolver.JavaMemberResolver;
@@ -32,8 +31,6 @@ import java.util.List;
 import static org.jetbrains.jet.lang.resolve.java.DescriptorSearchRule.IGNORE_KOTLIN_SOURCES;
 
 public final class JavaClassNonStaticMembersScope extends JavaClassMembersScope {
-    private Collection<ConstructorDescriptor> constructors = null;
-    private ConstructorDescriptor primaryConstructor = null;
     @NotNull
     private final ClassDescriptor descriptor;
     @NotNull
@@ -52,33 +49,9 @@ public final class JavaClassNonStaticMembersScope extends JavaClassMembersScope
         this.staticMembersOfPsiClass = staticMembersOfClass;
     }
 
-
     @NotNull
     public Collection<ConstructorDescriptor> getConstructors() {
-        initConstructorsIfNeeded();
-        return constructors;
-    }
-
-    @Nullable
-    public ConstructorDescriptor getPrimaryConstructor() {
-        initConstructorsIfNeeded();
-        return primaryConstructor;
-    }
-
-    private void initConstructorsIfNeeded() {
-        if (constructors == null) {
-            constructors = memberResolver.resolveConstructors(javaClass, descriptor);
-
-            for (ConstructorDescriptor constructor : constructors) {
-                if (constructor.isPrimary()) {
-                    if (primaryConstructor != null) {
-                        throw new IllegalStateException(
-                                "Class has more than one primary constructor: " + primaryConstructor + "\n" + constructor);
-                    }
-                    primaryConstructor = constructor;
-                }
-            }
-        }
+        return memberResolver.resolveConstructors(javaClass, descriptor);
     }
 
     @NotNull
diff --git a/idea/src/org/jetbrains/jet/plugin/ktSignature/KotlinSignatureInJavaMarkerProvider.java b/idea/src/org/jetbrains/jet/plugin/ktSignature/KotlinSignatureInJavaMarkerProvider.java
index 7141d372f09..85c60dc29ba 100644
--- a/idea/src/org/jetbrains/jet/plugin/ktSignature/KotlinSignatureInJavaMarkerProvider.java
+++ b/idea/src/org/jetbrains/jet/plugin/ktSignature/KotlinSignatureInJavaMarkerProvider.java
@@ -42,7 +42,7 @@ import org.jetbrains.jet.lang.resolve.BindingTrace;
 import org.jetbrains.jet.lang.resolve.DelegatingBindingTrace;
 import org.jetbrains.jet.lang.resolve.java.JavaBindingContext;
 import org.jetbrains.jet.lang.resolve.java.JavaDescriptorResolver;
-import org.jetbrains.jet.lang.resolve.java.scope.JavaClassNonStaticMembersScope;
+import org.jetbrains.jet.lang.resolve.java.descriptor.ClassDescriptorFromJvmBytecode;
 import org.jetbrains.jet.lang.resolve.name.FqName;
 import org.jetbrains.jet.lang.resolve.name.Name;
 import org.jetbrains.jet.lang.resolve.scopes.JetScope;
@@ -187,8 +187,9 @@ public class KotlinSignatureInJavaMarkerProvider implements LineMarkerProvider {
         Name name = Name.identifier(memberNameAsString);
         if (member instanceof PsiMethod) {
             if (((PsiMethod) member).isConstructor()) {
-                assert memberScope instanceof JavaClassNonStaticMembersScope : memberScope + ": " + memberScope.getClass().getName();
-                ((JavaClassNonStaticMembersScope) memberScope).getConstructors();
+                DeclarationDescriptor container = memberScope.getContainingDeclaration();
+                assert container instanceof ClassDescriptorFromJvmBytecode : container + "\n" + memberScope;
+                ((ClassDescriptorFromJvmBytecode) container).getConstructors();
             }
             else {
                 memberScope.getFunctions(name);