diff --git a/app/views/wiki/tex.rhtml b/app/views/wiki/tex.rhtml
index 5d10dba2..ddc87320 100644
--- a/app/views/wiki/tex.rhtml
+++ b/app/views/wiki/tex.rhtml
@@ -100,6 +100,7 @@
 \re@DeclareMathSymbol{\nwArr}{\mathrel}{symbolsC}{118}
 \re@DeclareMathSymbol{\swArrow}{\mathrel}{symbolsC}{119}
 \re@DeclareMathSymbol{\swArr}{\mathrel}{symbolsC}{119}
+\re@DeclareMathSymbol{\nequiv}{\mathrel}{symbolsC}{46}
 \makeatother
 
 % Widecheck
diff --git a/test/functional/wiki_controller_test.rb b/test/functional/wiki_controller_test.rb
index 27bee12b..11b4e661 100755
--- a/test/functional/wiki_controller_test.rb
+++ b/test/functional/wiki_controller_test.rb
@@ -767,6 +767,7 @@ class WikiControllerTest < Test::Unit::TestCase
 \re@DeclareMathSymbol{\nwArr}{\mathrel}{symbolsC}{118}
 \re@DeclareMathSymbol{\swArrow}{\mathrel}{symbolsC}{119}
 \re@DeclareMathSymbol{\swArr}{\mathrel}{symbolsC}{119}
+\re@DeclareMathSymbol{\nequiv}{\mathrel}{symbolsC}{46}
 \makeatother
 
 % Widecheck