diff --git a/Math.php b/Math.php
index 0a9e01326..427b7c0ae 100644
--- a/Math.php
+++ b/Math.php
@@ -41,9 +41,6 @@ define( 'MW_MATH_MATHJAX', 6 ); /// new in 1.19/1.20
 define( 'MW_MATH_LATEXML', 7 ); /// new in 1.22
 /**@}*/
 
-/** For back-compat */
-$wgUseTeX = true;
-
 /** Location of the texvc binary */
 $wgTexvc = dirname( __FILE__ ) . '/math/texvc';
 /**
diff --git a/math/README b/math/README
index 8491c006f..b4ed24026 100644
--- a/math/README
+++ b/math/README
@@ -42,8 +42,7 @@ In Ubuntu Precise, all dependencies can be installed using:
 Run 'make' (or 'gmake' if GNU make is not your default make). This should
 produce the texvc executable.
 
-Then you'll need to set $wgUseTeX to true in your LocalSettings.php. By default,
-MediaWiki will search in this directory for texvc, if you moved it elsewhere,
+By default, MediaWiki will search in this directory for texvc, if you moved it elsewhere,
 you'll have to modify $wgTexvc and set it to the path of the texvc executable.
 
 == Usage ==