diff --git a/tests/basics/int1.py b/tests/basics/int1.py
index aea72b7dd1..2d92105c73 100644
--- a/tests/basics/int1.py
+++ b/tests/basics/int1.py
@@ -36,6 +36,7 @@ print(int('11', 16))
 print(int('11', 8))
 print(int('11', 2))
 print(int('11', 36))
+print(int('xyz', 36))
 print(int('0o123', 0))
 print(int('8388607'))
 print(int('0x123', 16))
diff --git a/tests/basics/int_mpz.py b/tests/basics/int_mpz.py
index 814e1b4aad..425bc21b67 100644
--- a/tests/basics/int_mpz.py
+++ b/tests/basics/int_mpz.py
@@ -68,6 +68,7 @@ print(int("123456789012345678901234567890"))
 print(int("-123456789012345678901234567890"))
 print(int("123456789012345678901234567890abcdef", 16))
 print(int("123456789012345678901234567890ABCDEF", 16))
+print(int("1234567890abcdefghijklmnopqrstuvwxyz", 36))
 
 # invalid characters in string
 try: