diff --git a/telethon/password.py b/telethon/password.py
index 88b70852..bde21206 100644
--- a/telethon/password.py
+++ b/telethon/password.py
@@ -61,9 +61,8 @@ def check_prime_and_good(prime_bytes: bytes, g: int):
         0x0D, 0x81, 0x15, 0xF6, 0x35, 0xB1, 0x05, 0xEE, 0x2E, 0x4E, 0x15, 0xD0, 0x4B, 0x24, 0x54, 0xBF,
         0x6F, 0x4F, 0xAD, 0xF0, 0x34, 0xB1, 0x04, 0x03, 0x11, 0x9C, 0xD8, 0xE3, 0xB9, 0x2F, 0xCC, 0x5B))
 
-    if good_prime != prime_bytes:
-        if g in (3, 4, 5, 7):
-            return  # It's good
+    if good_prime == prime_bytes:
+        return  # It's good
 
     check_prime_and_good_check(int.from_bytes(prime_bytes, 'big'), g)