diff --git a/config/checkstyle/checkstyle.xml b/config/checkstyle/checkstyle.xml
index c645302..9d9e012 100644
--- a/config/checkstyle/checkstyle.xml
+++ b/config/checkstyle/checkstyle.xml
@@ -211,7 +211,7 @@
                      value="Parameter name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="LambdaParameterName">
-            <property name="format" value="^[a-z]{0,9}$"/>
+            <property name="format" value="^[a-z][a-zA-Z]{0,13}$"/>
             <message key="name.invalidPattern"
                      value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
         </module>