Fixed bug

idea/src/org/jetbrains/kotlin/idea/imports/KotlinImportOptimizer.kt

@@ -187,7 +187,7 @@ public class KotlinImportOptimizer() : ImportOptimizer {
                             val importableDescriptor = target.getImportableDescriptor()
                             if (referencedName != null && importableDescriptor.getName() != referencedName) continue // resolved via alias
 
-                            if (isAccessibleAsMember(target, element)) continue
+                            if (isAccessibleAsMember(importableDescriptor, element)) continue
 
                             usedDescriptors.add(importableDescriptor)
                         }

idea/testData/editor/optimizeImports/NestedClassInObject.kt

@@ -0,0 +1,11 @@
+package ppp
+
+import java.util.Date
+
+object OOO {
+    fun foo() {
+        Nested()
+    }
+
+    private class Nested
+}

idea/testData/editor/optimizeImports/NestedClassInObject.kt.after

@@ -0,0 +1,9 @@
+package ppp
+
+object OOO {
+    fun foo() {
+        Nested()
+    }
+
+    private class Nested
+}

idea/tests/org/jetbrains/kotlin/idea/imports/OptimizeImportsTestGenerated.java

@@ -139,6 +139,12 @@ public class OptimizeImportsTestGenerated extends AbstractOptimizeImportsTest {
         doTest(fileName);
     }
 
+    @TestMetadata("NestedClassInObject.kt")
+    public void testNestedClassInObject() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/editor/optimizeImports/NestedClassInObject.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("NestedClassReferenceOutsideClassBody.kt")
     public void testNestedClassReferenceOutsideClassBody() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/editor/optimizeImports/NestedClassReferenceOutsideClassBody.kt");