diff --git a/tests/gen/sha512_hkdf.py b/tests/gen/sha512_hkdf.py
index 1d696c03..1e0e3835 100755
--- a/tests/gen/sha512_hkdf.py
+++ b/tests/gen/sha512_hkdf.py
@@ -90,8 +90,6 @@ def vectors(ikm_size, salt_size, info_size, okm_size):
 vectors(32, 16, 8, 128)
 vectors(32, 16, 8, 129)
 
-vectors(32, 16, 8, 128)
-
 vectors(127, 16, 8, 128)
 vectors(128, 16, 8, 128)
 vectors(129, 16, 8, 128)