diff --git a/performance/benchmark.py b/performance/benchmark.py
index a7b8eb8c7..010f753d5 100644
--- a/performance/benchmark.py
+++ b/performance/benchmark.py
@@ -100,7 +100,7 @@ def run_timeit(quotes, iterations, repeat, profile=False):
         profile.disable()
         profile.dump_stats("marshmallow.pprof")
 
-    usec = best * 1e6 / iterations
+    usec = best * 1e6 / iterations / len(quotes)
     return usec