diff --git a/lisp/my/my-org-article.el b/lisp/my/my-org-article.el
index 650f6441..97933850 100644
--- a/lisp/my/my-org-article.el
+++ b/lisp/my/my-org-article.el
@@ -35,7 +35,7 @@
 (require 'ox-tufte)
 
 ;; add to generel org variabels, so that it works also for babel latex src blocks
-(add-to-list 'org-babel-latex-htlatex-packages "{pgfplots}")
+(add-to-list 'org-babel-latex-htlatex-packages "{pgfplots}" t)
 
 ;; add to general org variables, so that it works also for latex snippets, preview
 (add-to-list 'org-latex-default-packages-alist "\\newcommand{\\ti}[1]{_\\mathrm{#1}}" t) ;; tiefstellen, Index