diff --git a/runtime/lua/vim/lsp/util.lua b/runtime/lua/vim/lsp/util.lua
index 8d6f88bb2c..0da88f800e 100644
--- a/runtime/lua/vim/lsp/util.lua
+++ b/runtime/lua/vim/lsp/util.lua
@@ -1347,7 +1347,7 @@ function M.stylize_markdown(bufnr, contents, opts)
   -- table of fence types to {ft, begin, end}
   -- when ft is nil, we get the ft from the regex match
   local matchers = {
-    block = { nil, '```+([a-zA-Z0-9_]*)', '```+' },
+    block = { nil, '```+%s*([a-zA-Z0-9_]*)', '```+' },
     pre = { nil, '<pre>([a-z0-9]*)', '</pre>' },
     code = { '', '<code>', '</code>' },
     text = { 'text', '<text>', '</text>' },
diff --git a/test/functional/plugin/lsp/utils_spec.lua b/test/functional/plugin/lsp/utils_spec.lua
index 3e53b6d574..c91fffa90f 100644
--- a/test/functional/plugin/lsp/utils_spec.lua
+++ b/test/functional/plugin/lsp/utils_spec.lua
@@ -34,6 +34,19 @@ describe('vim.lsp.util', function()
       eq(expected, stylize_markdown(lines, opts))
     end)
 
+    it('code fences with whitespace surrounded info string', function()
+      local lines = {
+        "```   lua   ",
+        "local hello = 'world'",
+        "```",
+      }
+      local expected = {
+        "local hello = 'world'",
+      }
+      local opts = {}
+      eq(expected, stylize_markdown(lines, opts))
+    end)
+
     it('adds separator after code block', function()
       local lines = {
         "```lua",