diff --git a/doc/environments/groupthm/groupthm.dtx b/doc/environments/groupthm/groupthm.dtx
index 99cce66..fafe93c 100644
--- a/doc/environments/groupthm/groupthm.dtx
+++ b/doc/environments/groupthm/groupthm.dtx
@@ -2086,12 +2086,11 @@
 % We now glue the name together of its three parts,
 % and pass this key directly to the \pkg{thmtools} arguments
 %    \begin{macrocode}
-    \clist_put_right:Nx \l_@@_thmtools_clist
-      {
-        name = \tl_use:N \l_@@_prefix_tl
-               \tl_use:N \l_@@_name_tl
-               \tl_use:N \l_@@_suffix_tl
-      }
+    \tl_set:Nn       \l_tmpa_tl { name = }
+    \tl_put_right:NV \l_tmpa_tl \l_@@_prefix_tl
+    \tl_put_right:NV \l_tmpa_tl \l_@@_name_tl
+    \tl_put_right:NV \l_tmpa_tl \l_@@_suffix_tl
+    \clist_put_right:NV \l_@@_thmtools_clist \l_tmpa_tl
 %    \end{macrocode}
 % Finally, apply the additional \pkg{thmtools} keys for this specific theorem.
 % Putting them last will overwrite keys that were given by the groups.