diff --git a/momepy/diversity.py b/momepy/diversity.py
index 279551ce..5e0c58db 100644
--- a/momepy/diversity.py
+++ b/momepy/diversity.py
@@ -922,7 +922,7 @@ def __init__(
                             np.nanpercentile(values_list, percentiles, **method)
                         )
                 else:
-                    results_list.append(np.nan)
+                    results_list.append(np.array([np.nan] * len(percentiles)))
 
             self.frame = pd.DataFrame(
                 results_list, columns=percentiles, index=gdf.index