diff --git a/source/intro.tex b/source/intro.tex
index 4f2984457d..071856dc26 100644
--- a/source/intro.tex
+++ b/source/intro.tex
@@ -412,7 +412,7 @@
 set of one or more \termref{defns.character}{character}{s} which
 share the same primary sort key: that is the sort key weighting that
 depends only upon character shape, and not accents, case, or
-locale specific tailorings
+locale-specific tailorings
 
 \definition{program-defined specialization}{defns.prog.def.spec}
 \defncontext{library}