diff --git a/1-enrich-with-datacite/concatenate-enrich-dois.py b/1-enrich-with-datacite/concatenate-enrich-dois.py
index 15786a2f12c375d2b28ed0534f2b22d200902da9..a96a44f845224e412c60ef225b4b08fafc72293f 100644
--- a/1-enrich-with-datacite/concatenate-enrich-dois.py
+++ b/1-enrich-with-datacite/concatenate-enrich-dois.py
@@ -68,7 +68,7 @@ if temp_rows :
 	client_urls = []
 	for i in range(0, len(df_client_raw)):
 		client = df_client_raw.iloc[i].name
-		req = requests.get('https://api.datacite.org/clients?query=id:%22'+str(client)'%22')
+		req = requests.get('https://api.datacite.org/clients?query=id:%22'+str(client)+'%22')
 		client_names.append(req.json()["data"][0]["attributes"]["name"])
 		client_years.append(req.json()["data"][0]["attributes"]["year"])
 		client_urls.append(req.json()["data"][0]["attributes"]["url"])