diff --git a/test/run_benchmarks.py b/test/run_benchmarks.py
index e89a808..2050a88 100755
--- a/test/run_benchmarks.py
+++ b/test/run_benchmarks.py
@@ -438,7 +438,7 @@ def run_single_benchmark(func_args):
         # exit if checker had any read error
         if result.checker_errors != 0:
             raise RuntimeError('Error during benchmark: checker_errors = {}, args = {}'.format(
-                result.checker_errors, args
+                result.checker_errors, config.as_args()
             ))
     except Exception as e:
         if ignore_failures: