diff --git a/taranis/distance.py b/taranis/distance.py
index 4b2ec2f..028dfbb 100644
--- a/taranis/distance.py
+++ b/taranis/distance.py
@@ -77,7 +77,7 @@ def create_matrix(self) -> pd.DataFrame:
         dist_matrix.write("\n".join(out_data[1:]))
         dist_matrix.seek(0)
         matrix_pd = pd.read_csv(
-            dist_matrix, sep="\t", index_col="alleles", engine="python", dtype=float
+            dist_matrix, sep="\t", index_col="alleles", engine="python"
         ).fillna(0)
         # Close object and discard memory buffer
         dist_matrix.close()