examples/cgit-commit-filter.lua | 3 ++-

diff --git a/examples/cgit-commit-filter.lua b/examples/cgit-commit-filter.lua
index 8f9d3eb51d0d362814733449eacef1adf5660203..9614c94441e0149374f388e7bebc0df3662078d4 100644
--- a/examples/cgit-commit-filter.lua
+++ b/examples/cgit-commit-filter.lua
@@ -32,7 +32,8 @@ 		if u == nil then
 			html(buffer)
 		else
 			html('<a href="' .. u .. '?x=t&amp;q=')
-			html_url_arg('"' .. buffer .. '"')
+			s = string.gsub(buffer, '"', '""')
+			html_url_arg('"' .. s .. '"')
 			html('"><tt>')
 			html_txt(buffer)
 			html('</tt></a>')