diff --git a/config/sun_checks.xml b/config/sun_checks.xml
index 7b7a63d35283292efe876013643b815abdf659f4..762bf178cfbd75eef1113df4b4d62ca19f44aef5 100644
--- a/config/sun_checks.xml
+++ b/config/sun_checks.xml
@@ -64,9 +64,7 @@
 
 	<!-- Checks for whitespace -->
 	<!-- See http://checkstyle.sf.net/config_whitespace.html -->
-	<module name="FileTabCharacter">
-		<property name="fileExtensions" value="java" />
-	</module>
+	<module name="FileTabCharacter" />
 
 	<!-- https://checkstyle.sourceforge.io/config_sizes.html#LineLength -->
 	<module name="LineLength">