diff --git a/tests/scripts/generate_bignum_tests.py b/tests/scripts/generate_bignum_tests.py
index 091630d..5cb7997 100755
--- a/tests/scripts/generate_bignum_tests.py
+++ b/tests/scripts/generate_bignum_tests.py
@@ -85,8 +85,8 @@
 
 class BignumTarget(test_data_generation.BaseTarget, metaclass=ABCMeta):
     #pylint: disable=abstract-method
-    """Target for bignum (mpi) test case generation."""
-    target_basename = 'test_suite_mpi.generated'
+    """Target for bignum (legacy) test case generation."""
+    target_basename = 'test_suite_bignum.generated'
 
 
 class BignumOperation(BignumTarget, metaclass=ABCMeta):