diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index f6bc06585d..7425013703 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -923,7 +923,7 @@
                     When inheriting the
                     <link linkend='ref-classes-buildhistory'><filename>buildhistory</filename></link>
                     class, specifies the base name of the image analyzed using
-                    build history feature.
+                    the build history feature.
                     For more information on how the variable works, see the
                     <filename>buildhistory.class</filename>.
                     For more information on how build history works, see the