diff --git a/widget/app_launcher/init.lua b/widget/app_launcher/init.lua
index 61a7f40..53a1901 100644
--- a/widget/app_launcher/init.lua
+++ b/widget/app_launcher/init.lua
@@ -71,24 +71,9 @@ local function string_levenshtein(str1, str2)
 	return matrix[len1][len2]
 end
 
-local function case_insensitive_pattern(pattern)
-    -- find an optional '%' (group 1) followed by any character (group 2)
-    local p = pattern:gsub("(%%?)(.)", function(percent, letter)
-      if percent ~= "" or not letter:match("%a") then
-        -- if the '%' matched, or `letter` is not a letter, return "as is"
-        return percent .. letter
-      else
-        -- else, return a case-insensitive character class of the matched letter
-        return string.format("[%s%s]", letter:lower(), letter:upper())
-      end
-    end)
-
-    return p
-end
-
 local function has_value(tab, val)
-    for index, value in pairs(tab) do
-        if val:find(case_insensitive_pattern(value)) then
+    for _, value in ipairs(tab) do
+        if val:lower():find(value:lower(), 1, true) then
             return true
         end
     end