diff --git a/required/latex-lab/latex-lab-float.dtx b/required/latex-lab/latex-lab-float.dtx
index ed8b8390e..ed79197d6 100644
--- a/required/latex-lab/latex-lab-float.dtx
+++ b/required/latex-lab/latex-lab-float.dtx
@@ -142,7 +142,8 @@
 %
 % \begin{variable}{
 %  \g_@@_float_sect_prop,
-%  \g_@@_float_types_seq
+%  \g_@@_float_types_seq,
+%  \@current@float@struct
 %   }
 % These variables will hold the structure number for the float container  
 % and the list of float types. Currently only figure and table are supported
@@ -152,6 +153,7 @@
 \seq_new:N  \g_@@_float_types_seq
 \seq_gput_right:Nn \g_@@_float_types_seq {figure}
 \seq_gput_right:Nn \g_@@_float_types_seq {table}
+\tl_new:N\@current@float@struct
 %    \end{macrocode}
 % \end{variable}
 %