diff --git a/spring-boot-parent/src/checkstyle/checkstyle-suppressions.xml b/spring-boot-parent/src/checkstyle/checkstyle-suppressions.xml
index 139f518c6a..6af18ae3f6 100644
--- a/spring-boot-parent/src/checkstyle/checkstyle-suppressions.xml
+++ b/spring-boot-parent/src/checkstyle/checkstyle-suppressions.xml
@@ -6,7 +6,7 @@
 	<suppress files="[\\/]transaction-logs[\\/]" checks=".*" />
 	<suppress files="[\\/]target[\\/]" checks=".*" />
 	<suppress files="[\\/]build.log" checks=".*" />
-	<suppress files=".+\.[jar|git|ico|p12]" checks=".*" />
+	<suppress files=".+\.(jar|git|ico|p12)" checks=".*" />
 	<suppress files="SpringApplicationTests\.java" checks="FinalClass" />
 	<suppress files=".+Configuration\.java" checks="HideUtilityClassConstructor" />
 	<suppress files=".+Application\.java" checks="HideUtilityClassConstructor" />