diff --git a/src/db/db/dbNetlistCompare.h b/src/db/db/dbNetlistCompare.h
index f7b9cc5c0..7fa46f99a 100644
--- a/src/db/db/dbNetlistCompare.h
+++ b/src/db/db/dbNetlistCompare.h
@@ -313,7 +313,6 @@ template<> struct type_traits<db::NetlistCompareLogger> : public tl::type_traits
 {
   //  mark "NetlistDeviceExtractor" as having a default ctor and no copy ctor
   typedef tl::false_tag has_copy_constructor;
-  typedef tl::false_tag has_default_constructor;
 };
 
 }
diff --git a/src/db/db/dbNetlistCrossReference.h b/src/db/db/dbNetlistCrossReference.h
index 03754def8..176750208 100644
--- a/src/db/db/dbNetlistCrossReference.h
+++ b/src/db/db/dbNetlistCrossReference.h
@@ -307,7 +307,6 @@ template<> struct type_traits<db::NetlistCrossReference> : public tl::type_trait
 {
   //  mark "NetlistDeviceExtractor" as having a default ctor and no copy ctor
   typedef tl::false_tag has_copy_constructor;
-  typedef tl::false_tag has_default_constructor;
 };
 
 }