diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index ed1597e5d..7b6f222a8 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -631,11 +631,7 @@ struct CompareValues
 };
 
 
-#if HAVE_BOEHMGC
 typedef std::list<Value *, gc_allocator<Value *>> ValueList;
-#else
-typedef std::list<Value *> ValueList;
-#endif
 
 
 static Bindings::const_iterator getAttr(
diff --git a/src/libexpr/value.hh b/src/libexpr/value.hh
index 087406965..a837ac133 100644
--- a/src/libexpr/value.hh
+++ b/src/libexpr/value.hh
@@ -15,6 +15,9 @@
 #else
 template<typename T>
 using traceable_allocator = std::allocator<T>;
+
+template<typename T>
+using gc_allocator = std::allocator<T>;
 #endif
 
 #include <nlohmann/json_fwd.hpp>