diff --git a/luametalatex.ini b/luametalatex.ini
index 20b7524..52a27be 100644
--- a/luametalatex.ini
+++ b/luametalatex.ini
@@ -16,4 +16,29 @@
   \global\def\eTeXrevision{.2}
 \endgroup
 
+\let\LMLTsaveddump\dump
+\let\dump\relax
 \input latex.ltx
+\let\dump\LMLTsaveddump
+%
+\makeatletter
+\def\set@fontsize#1#2#3{%
+  \@defaultunits\@tempdimb#2pt\relax\@nnil
+  \edef\f@size{\strip@pt\@tempdimb}%
+  \@defaultunits\@tempdimc#3pt\relax\@nnil
+  \edef\f@baselineskip{\the\@tempdimc}%
+  \edef\f@linespread{#1}%
+  \let\baselinestretch\f@linespread
+  \def\size@update{%
+    \baselineskip\f@baselineskip\relax
+    \baselineskip\f@linespread\baselineskip
+    \normalbaselineskip\baselineskip
+    \setbox\strutbox\hbox{%
+      \vrule\@height.7\baselineskip
+            \@depth.3\baselineskip
+            \@width\z@}%
+    \let\size@update\relax}%
+}
+\makeatother
+%
+\dump