diff --git a/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc b/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc
index 2bf5ad31013..c4dfdb29f7f 100644
--- a/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc
+++ b/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.cc
@@ -286,6 +286,14 @@ TopLevel::visit (AST::TypeParam &type_param)
 			 Namespace::Types);
 }
 
+void
+TopLevel::visit (AST::ConstGenericParam &const_param)
+{
+  insert_or_error_out (const_param.get_name (), const_param, Namespace::Values);
+
+  DefaultResolver::visit (const_param);
+}
+
 void
 TopLevel::visit (AST::TupleStruct &tuple_struct)
 {
diff --git a/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.h b/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.h
index d6783583ba4..557fa949b40 100644
--- a/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.h
+++ b/gcc/rust/resolve/rust-toplevel-name-resolver-2.0.h
@@ -164,6 +164,7 @@ class TopLevel : public DefaultResolver
   void visit (AST::TypeAlias &type_item) override;
   void visit (AST::ExternCrate &crate) override;
   void visit (AST::TypeParam &type_param) override;
+  void visit (AST::ConstGenericParam &const_param) override;
 
   void visit (AST::UseDeclaration &use) override;
 };