diff --git a/[core]/esx_identity/server/main.lua b/[core]/esx_identity/server/main.lua
index a2884c76..5c638400 100644
--- a/[core]/esx_identity/server/main.lua
+++ b/[core]/esx_identity/server/main.lua
@@ -45,15 +45,15 @@ local function checkDOBFormat(str)
     if ((d <= 0) or (d > 31)) or ((m <= 0) or (m > 12)) or ((y <= Config.LowestYear) or (y > Config.HighestYear)) then
         return false
     elseif m == 4 or m == 6 or m == 9 or m == 11 then
-        return d < 30
+        return d <= 30
     elseif m == 2 then
         if y % 400 == 0 or (y % 100 ~= 0 and y % 4 == 0) then
-            return d < 29
+            return d <= 29
         else
-            return d < 28
+            return d <= 28
         end
     else
-        return d < 31
+        return d <= 31
     end
 end