diff --git a/test/helpers.lua b/test/helpers.lua
index 333e98d495..7d2f8f760a 100644
--- a/test/helpers.lua
+++ b/test/helpers.lua
@@ -58,9 +58,9 @@ local check_logs_useless_lines = {
 --- Invokes `fn` and includes the tail of `logfile` in the error message if it
 --- fails.
 ---
----@param logfile  Log file, defaults to $NVIM_LOG_FILE or '.nvimlog'
----@param fn       Function to invoke
----@param ...      Function arguments
+---@param logfile string  Log file, defaults to $NVIM_LOG_FILE or '.nvimlog'
+---@param fn string       Function to invoke
+---@param ... string      Function arguments
 local function dumplog(logfile, fn, ...)
   -- module.validate({
   --   logfile={logfile,'s',true},
@@ -102,8 +102,8 @@ end
 
 --- Asserts that `pat` matches one or more lines in the tail of $NVIM_LOG_FILE.
 ---
----@param pat  (string) Lua pattern to search for in the log file.
----@param logfile  (string, default=$NVIM_LOG_FILE) full path to log file.
+---@param pat string      Lua pattern to search for in the log file
+---@param logfile string  Full path to log file (default=$NVIM_LOG_FILE)
 function module.assert_log(pat, logfile)
   logfile = logfile or os.getenv('NVIM_LOG_FILE') or '.nvimlog'
   local nrlines = 10