diff --git a/pom.xml b/pom.xml
index dd6df46..c0a89f0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -305,7 +305,7 @@
                         <configuration>
                             <quiet>true</quiet>
                             <doclint>none</doclint>
-                            <failOnWarnings>false</failOnWarnings>
+                            <failOnWarnings>true</failOnWarnings>
                             <links>
                                 <link>https://javadoc.io/doc/com.vaadin/vaadin-platform-javadoc/${vaadin.version}</link>
                             </links>