diff --git a/tcsh.xml b/tcsh.xml
index bed4bfe..ddba8fc 100644
--- a/tcsh.xml
+++ b/tcsh.xml
@@ -685,3 +685,3 @@
         <RegExpr attribute="Variable" context="#pop" String="\b&varname;" />
-        <DetectChar attribute="Variable" context="Assign" char="\s" />
+        <DetectChar attribute="Variable" context="Assign" char=" " />
         <IncludeRules context="FindMost" />