diff --git a/style/checkstyle.xml b/style/checkstyle.xml
index 999f5c687a..87daf70145 100644
--- a/style/checkstyle.xml
+++ b/style/checkstyle.xml
@@ -47,7 +47,7 @@
             <message key="name.invalidPattern" value="Type name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="ClassTypeParameterName">
-            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+            <property name="format" value="^[A-Z][a-zA-Z0-9]*$"/>
             <message key="name.invalidPattern" value="Class type name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="ConstantName">