diff --git a/html5/index.html b/html5/index.html
index 7687b74a..14489e35 100644
--- a/html5/index.html
+++ b/html5/index.html
@@ -770,7 +770,10 @@ <h2>Xpra Bug Report</h2>
           false
         );
         const keyboard = getboolparam("keyboard", Utilities.isMobile());
-        const clipboard = getboolparam("clipboard", true);
+        //Safari and navigator.clipboard don't mix well:
+        //(only enabled with ssl contexts)
+        //https://github.com/Xpra-org/xpra-html5/issues/226
+        const clipboard = getboolparam("clipboard", !(Utilities.isMacOS() && ssl));
         const printing = getboolparam("printing", true);
         const file_transfer = getboolparam("file_transfer", true);
         const steal = getboolparam("steal", true);