diff --git a/hadoop-build-tools/src/main/resources/checkstyle/checkstyle.xml b/hadoop-build-tools/src/main/resources/checkstyle/checkstyle.xml
index ca8d137dd5e49..574c48d4286bb 100644
--- a/hadoop-build-tools/src/main/resources/checkstyle/checkstyle.xml
+++ b/hadoop-build-tools/src/main/resources/checkstyle/checkstyle.xml
@@ -73,6 +73,11 @@
         <property name="max" value="100"/>
     </module>
 
+    <module name="RegexpSingleline">
+        <property name="format" value="\s+$"/>
+        <property name="severity" value="warn"/>
+    </module>
+
     <module name="TreeWalker">
 
         <module name="SuppressWarningsHolder"/>