diff --git a/tools/static-code-analysis/checkstyle/suppressions.xml b/tools/static-code-analysis/checkstyle/suppressions.xml
index 7800134b7..e66b7af7c 100644
--- a/tools/static-code-analysis/checkstyle/suppressions.xml
+++ b/tools/static-code-analysis/checkstyle/suppressions.xml
@@ -3,7 +3,8 @@
 <suppressions>
     <!-- These suppressions define which files to be suppressed for which checks. -->
     <suppress files=".+[\\/]internal[\\/].+\.java" checks="JavadocType|JavadocVariable|JavadocMethod|MissingJavadocFilterCheck"/>
-    <suppress files=".+DTO\.java" checks="JavadocType|JavadocVariable|JavadocMethod|MissingJavadocFilterCheck|NullAnnotationsCheck" />
+    <suppress files=".+DTO\.java" checks="JavadocType|JavadocVariable|JavadocMethod|MissingJavadocFilterCheck|NullAnnotationsCheck"/>
+    <suppress files=".+[\\/]dto[\\/].+\.java" checks="JavadocType|JavadocVariable|JavadocMethod|MissingJavadocFilterCheck|NullAnnotationsCheck"/>
     <suppress files=".+Impl\.java" checks="JavadocType|JavadocVariable|JavadocMethod|MissingJavadocFilterCheck"/>
 
     <!-- Homematic and Tellstick bindings are creating and configuring things dynamically, they will log false positives for unused configuration -->