diff --git a/make_data.py b/make_data.py
index 7074912109c5ffa3c1130b36c74d3a7b55ffe6d0..bd366cc0071d6ff6bfdbd8ab4bcd2e1ca4446eea 100644
--- a/make_data.py
+++ b/make_data.py
@@ -91,6 +91,8 @@ def v1_doctor():
     tmp = tmp.rename(columns=dict(zip(list(range(len(name))), name)))
     print(tmp.head(6))
 
+    df["merchant_id"] = df["merchant_id"].astype("str")
+    tmp["merchant_id"] = tmp["merchant_id"].astype("str")
     df = pd.merge(df, tmp, on='merchant_id')
     print(df.head(6))