diff --git a/generator/abstractmetalang.h b/generator/abstractmetalang.h
index 49c0421..820540c 100644
--- a/generator/abstractmetalang.h
+++ b/generator/abstractmetalang.h
@@ -831,6 +831,10 @@ public:
     void setTypeAlias(bool typeAlias) { m_is_type_alias = typeAlias; }
     bool isTypeAlias() const { return m_is_type_alias; }
 
+    bool operator <(const AbstractMetaClass &a) const {
+      return qualifiedCppName() < a.qualifiedCppName();
+    }
+
 private:
     uint m_namespace : 1;
     uint m_qobject : 1;
diff --git a/generator/generator.cpp b/generator/generator.cpp
index ef78394..d170726 100644
--- a/generator/generator.cpp
+++ b/generator/generator.cpp
@@ -62,6 +62,7 @@ void Generator::generate()
         return;
     }
 
+    qStableSort(m_classes);
 
     foreach (AbstractMetaClass *cls, m_classes) {
         if (!shouldGenerate(cls))