diff --git a/mteb/load_results/task_results.py b/mteb/load_results/task_results.py
index 202ed9b5f5..d619e05a61 100644
--- a/mteb/load_results/task_results.py
+++ b/mteb/load_results/task_results.py
@@ -290,7 +290,7 @@ def from_disk(cls, path: Path, load_historic_data: bool = True) -> TaskResult:
                     f"Error loading TaskResult from disk. You can try to load historic data by setting `load_historic_data=True`. Error: {e}"
                 )
 
-        if data["mteb_version"] is None:
+        if ("mteb_version" in data) and (data["mteb_version"] is None):
             data.pop("mteb_version")
 
         pre_1_11_load = (