diff --git a/build/code_sniffer/ruleset-php-strict.xml b/build/code_sniffer/ruleset-php-strict.xml
index c722f7851c..59db73dec4 100644
--- a/build/code_sniffer/ruleset-php-strict.xml
+++ b/build/code_sniffer/ruleset-php-strict.xml
@@ -39,4 +39,7 @@
       There MUST be one blank line after the use block. -->
  <rule ref="PSR2.Namespaces.UseDeclaration" />
 
+ <!-- There MUST be one blank line after the namespace declaration -->
+ <rule ref="PSR2.Namespaces.NamespaceDeclaration" />
+
 </ruleset>