diff --git a/js/build_page.js b/js/build_page.js
index 65fa35a..6a2ee0a 100644
--- a/js/build_page.js
+++ b/js/build_page.js
@@ -133,6 +133,7 @@
         // Change the previous classeDiv
         if(duplicateSubjectBoolNext && duplicateSubjectCounter%2 == 1) {
             classeDiv.classList.add('message', 'complex-button-full');
+            duplicateSubjectCounter++;
         }
         
         classeDiv = document.createElement('div');