diff --git a/platform/platform-impl/src/com/intellij/diagnostic/hprof/navigator/ObjectNavigator.kt b/platform/platform-impl/src/com/intellij/diagnostic/hprof/navigator/ObjectNavigator.kt
index de788ecc4474..e726ba39bfa7 100644
--- a/platform/platform-impl/src/com/intellij/diagnostic/hprof/navigator/ObjectNavigator.kt
+++ b/platform/platform-impl/src/com/intellij/diagnostic/hprof/navigator/ObjectNavigator.kt
@@ -61,7 +61,7 @@ abstract class ObjectNavigator(val classStore: ClassStore, val instanceCount: Lo
   fun getInstanceFieldObjectId(className: String?, name: String): Long {
     val refs = getReferencesCopy()
     className?.let {
-      assert(className == getClass().name) { "Expected $className, got ${getClass().name}" }
+      assert(className == getClass().name.substringAfter('!')) { "Expected $className, got ${getClass().name}" }
     }
     val indexOfField = getClass().allRefFieldNames(classStore).indexOfFirst { it == name }
     return refs[indexOfField]