diff --git a/oi/type_graph/ClangTypeParser.cpp b/oi/type_graph/ClangTypeParser.cpp
index 86ae192..becd2f0 100644
--- a/oi/type_graph/ClangTypeParser.cpp
+++ b/oi/type_graph/ClangTypeParser.cpp
@@ -333,6 +333,9 @@ void ClangTypeParser::enumerateClassParents(const clang::RecordType& ty,
     if (baseType.isNull())
       continue;
 
+    if (base.isVirtual())
+      continue;
+
     auto* baseCxxDecl = baseType->getAsCXXRecordDecl();
     if (baseCxxDecl == nullptr)
       continue;