diff --git a/assets/clipboard.js b/assets/clipboard.js
index fdf84cf..2799f2f 100644
--- a/assets/clipboard.js
+++ b/assets/clipboard.js
@@ -11,6 +11,9 @@
 
   document.querySelectorAll("pre code").forEach(code => {
     code.addEventListener("click", function (event) {
+      if (window.getSelection().toString()) {
+        return;
+      }
       select(code.parentElement);
 
       if (navigator.clipboard) {