diff --git a/pmd-core/src/main/resources/rulesets/internal/all-java.xml b/pmd-core/src/main/resources/rulesets/internal/all-java.xml
index db34c37745..26ac051270 100644
--- a/pmd-core/src/main/resources/rulesets/internal/all-java.xml
+++ b/pmd-core/src/main/resources/rulesets/internal/all-java.xml
@@ -27,6 +27,6 @@
     <rule ref="category/java/errorprone.xml" />
     <rule ref="category/java/multithreading.xml" />
     <rule ref="category/java/performance.xml" />
-<!--     <rule ref="category/java/security.xml" /> -->
+    <rule ref="category/java/security.xml" />
 
 </ruleset>