diff --git a/devops/scripts/benchmarks/history.py b/devops/scripts/benchmarks/history.py
index ae8ac16c264bf..9b9eb20fb6112 100644
--- a/devops/scripts/benchmarks/history.py
+++ b/devops/scripts/benchmarks/history.py
@@ -120,7 +120,7 @@ def git_info_from_path(path: Path) -> (str, str):
             )
 
         compute_runtime = (
-            options.compute_runtime_tag if options.build_compute_runtime else None
+            options.compute_runtime_tag if options.build_compute_runtime else ""
         )
 
         return BenchmarkRun(