diff --git a/docs/TestingGuide.html b/docs/TestingGuide.html
index b1e5059a687..b08d96c83bc 100644
--- a/docs/TestingGuide.html
+++ b/docs/TestingGuide.html
@@ -291,7 +291,7 @@ the test.</dd>
 <dt>%s</dt> 
 <dd>The test file.</dd> 
 
-<dt>$t</dt>
+<dt>%t</dt>
 <dd>Temporary filename: testscript.test_filename.tmp, where
 test_filename is the name of the test file. All temporary files are
 placed in the Output directory within the directory the test is