diff --git a/pmd-php/src/main/java/net/sourceforge/pmd/lang/php/PhpLanguageModule.java b/pmd-php/src/main/java/net/sourceforge/pmd/lang/php/PhpLanguageModule.java
index 8e6d9f33d9..1b1169f054 100644
--- a/pmd-php/src/main/java/net/sourceforge/pmd/lang/php/PhpLanguageModule.java
+++ b/pmd-php/src/main/java/net/sourceforge/pmd/lang/php/PhpLanguageModule.java
@@ -20,6 +20,6 @@ public class PhpLanguageModule extends CpdOnlyLanguageModuleBase {
 
     @Override
     public Tokenizer createCpdTokenizer(LanguagePropertyBundle bundle) {
-        return new AnyTokenizer("#");
+        return new AnyTokenizer("#|//");
     }
 }