diff --git a/molskill/data/standardization.py b/molskill/data/standardization.py
index 2f2ab19..fd85542 100644
--- a/molskill/data/standardization.py
+++ b/molskill/data/standardization.py
@@ -30,10 +30,11 @@ def get_population_moments(
     """
 
     if moment_csv is None:
-        LOGGER.info("Standardization moments not found. Downloading from remote...")
         moment_csv = MOMENT_CSV
-        os.makedirs(ASSET_PATH, exist_ok=True)
-        download(DEFAULT_MOMENTS_REMOTE, moment_csv)
+        if (not os.path.exists(moment_csv)) or (os.path.getsize(moment_csv) == 0):
+            LOGGER.info("Standardization moments not found. Downloading from remote...")
+            os.makedirs(ASSET_PATH, exist_ok=True)
+            download(DEFAULT_MOMENTS_REMOTE, moment_csv)
 
     population_df = pd.read_csv(moment_csv, index_col="descriptor")
     assert set(population_df.keys()) == {