diff --git a/fhirImport.py b/fhirImport.py
index bb862d3..180f25c 100644
--- a/fhirImport.py
+++ b/fhirImport.py
@@ -32,7 +32,10 @@ def getBundle(url: str, search: str):
 
     
     if url is not None:
-        link = url + '?_format=json'
+        if '?' in url:
+            link = url + '&_format=json'
+        else:
+            link = url + '?_format=json'
     else:
         link = fhir_server + search + '&_format=json'