diff --git a/tests/generators/bls/main.py b/tests/generators/bls/main.py
index 8cdc2a94bf..e7e1ccfcfa 100644
--- a/tests/generators/bls/main.py
+++ b/tests/generators/bls/main.py
@@ -272,7 +272,7 @@ def case04_fast_aggregate_verify():
     yield f'fast_aggregate_verify_infinity_pubkey', {
         'input': {
             'pubkeys': [encode_hex(pubkey) for pubkey in pubkeys_with_infinity],
-            'messages': encode_hex(SAMPLE_MESSAGE),
+            'message': encode_hex(SAMPLE_MESSAGE),
             'signature': encode_hex(aggregate_signature),
         },
         'output': False,