diff --git a/lib/languages b/lib/languages
index da18b340a5..e034be1e08 100644
--- a/lib/languages
+++ b/lib/languages
@@ -74,7 +74,7 @@ serbian-latin     serbian	"Serbian (Latin)"	false  iso8859-2  sr_RS	 ""
 slovak      slovak	"Slovak"	false  iso8859-2  sk_SK	 ""
 slovene     slovene	"Slovene"	false  iso8859-2  sl_SI	 ""
 spanish     spanish	"Spanish"	false  iso8859-15 es_ES	 "\addto\shorthandsspanish{\spanishdeactivate{~<>}}"
-spanish-mexico     spanish	"Spanish (Mexico)"	false  iso8859-15 es_MX	 "\renewcommand\shorthandsspanish{}"
+spanish-mexico     spanish	"Spanish (Mexico)"	false  iso8859-15 es_MX	 "\addto\extrasspanish{\renewcommand\shorthandsspanish{}}"
 swedish     swedish	"Swedish"	false  iso8859-15 sv_SE	 ""
 thai        thai	"Thai"		false  tis620-0   th_TH	 "\usepackage{thswitch}"
 turkish     turkish	"Turkish"	false  iso8859-9  tr_TR	 ""