diff --git a/templates/portfolio/index.html b/templates/portfolio/index.html
index 9440217..d3aa640 100644
--- a/templates/portfolio/index.html
+++ b/templates/portfolio/index.html
@@ -68,6 +68,7 @@
             break;
           case 1:
             /* Middle click */
+            event.preventDefault();
             backgroundtab();
 
             break;