diff --git a/benchmark/benchmark.py b/benchmark/benchmark.py
index c3ad3daee3e..02117242742 100755
--- a/benchmark/benchmark.py
+++ b/benchmark/benchmark.py
@@ -548,9 +548,9 @@ def add(attr_name, increment, global_stats, lang_stats):
         lang_stats.avg_duration_per_test = 0
         lang_stats.cost = 0
         for i in range(tries):
-            setattr(lang_stats, f"pass_rate_{i}", 0)
+            setattr(lang_stats, f"pass_rate_{i + 1}", 0)
         for i in range(tries):
-            setattr(lang_stats, f"pass_num_{i}", 0)
+            setattr(lang_stats, f"pass_num_{i + 1}", 0)
         lang_stats.error_outputs = 0
         lang_stats.user_asks = 0
         lang_stats.test_timeouts = 0
@@ -636,7 +636,7 @@ def show(stat, red="red"):
     for i in range(tries):
         pass_rate = 100 * passed_tests[i] / res.completed_tests
         percents[i] = pass_rate
-        # console.print(f"{pass_rate:.1f}% correct after try {i+1}")
+        # console.print(f"{pass_rate:.1f}% correct after try {i + 1}")
         setattr(res, f"pass_rate_{i + 1}", f"{pass_rate:.1f}")
         setattr(res, f"pass_num_{i + 1}", passed_tests[i])
 
@@ -705,7 +705,7 @@ def show(stat, red="red"):
 
     if verbose and len(lang_to_stats) > 0:
 
-        def format_lang_stats(lang_stats):
+        def format_lang_stats(lang, lang_stats):
             # First, postprocess attributes for easier printing
             if lang_stats.completed_tests > 0:
                 lang_stats.avg_duration_per_test = lang_stats.duration / float(
@@ -713,9 +713,9 @@ def format_lang_stats(lang_stats):
                 )
             for i in range(tries):
                 num_passed = lang_to_passed_tests[lang][i]
-                setattr(lang_stats, f"pass_num_{i}", num_passed)
+                setattr(lang_stats, f"pass_num_{i + 1}", num_passed)
                 pass_rate = 100 * num_passed / float(lang_stats.completed_tests)
-                setattr(lang_stats, f"pass_rate_{i}", pass_rate)
+                setattr(lang_stats, f"pass_rate_{i + 1}", pass_rate)
 
             # Then format attributes into ready-to-print strings
             for attr in lang_stats.__dict__:
@@ -742,7 +742,7 @@ def compute_lang_to_col_widths(lang_to_stats):
         print("======== Stats by language ========")
         print()
 
-        [format_lang_stats(lang_stats) for lang_stats in lang_to_stats.values()]
+        [format_lang_stats(lang, lang_stats) for lang, lang_stats in lang_to_stats.items()]
         lang_to_col_widths = compute_lang_to_col_widths(lang_to_stats)
 
         any_stats = list(lang_to_stats.values())[0]