diff --git a/cpp/ql/lib/semmlecode.cpp.dbscheme b/cpp/ql/lib/semmlecode.cpp.dbscheme
index c16b29b27f7..2121ffec11f 100644
--- a/cpp/ql/lib/semmlecode.cpp.dbscheme
+++ b/cpp/ql/lib/semmlecode.cpp.dbscheme
@@ -1327,7 +1327,8 @@ specialnamequalifyingelements(
 @namequalifiableelement = @expr | @namequalifier;
 @namequalifyingelement = @namespace
                        | @specialnamequalifyingelement
-                       | @usertype;
+                       | @usertype
+                       | @decltype;
 
 namequalifiers(
     unique int id: @namequalifier,