diff --git a/source/js/custom_any_theme_headings_number.js b/source/js/custom_any_theme_headings_number.js
index 4026ad6..5944dfb 100644
--- a/source/js/custom_any_theme_headings_number.js
+++ b/source/js/custom_any_theme_headings_number.js
@@ -14,7 +14,7 @@
             }else if(level == current_heading_level){
                 headingCounters[level-1] += 1;
             }else{
-                headingCounters[level-1] = 1;
+                headingCounters[level-1] += 1;
                 for (let i = level + 1; i < headingCounters.length; i++) {
                     headingCounters[i] = 0;
                 }