diff --git a/geordash/api.py b/geordash/api.py
index 0c1b834..623a4a4 100644
--- a/geordash/api.py
+++ b/geordash/api.py
@@ -151,8 +151,29 @@ def geonetwork_subportals():
     headers = r[0]
     cookies = r[1]
     me = r[2]
+
+    gn_site = requests.get(gnurl + "srv/api/site", headers={"Accept": "application/json"})
+    information_site = {}
+    if gn_site.status_code == 200:
+        information_site = gn_site.json()
+    else:
+        app.logger.error(
+            f"Problem to detect the version of geonetwork with {gnurl}srv/api/site response {gn_site} \n"
+            f"Will try anyway to request the portal"
+        )
+
+    # default url of subportal sources
+    subportalapiurl = "srv/api/sources"
+    # safely get the version from json answer
+    if "4.4." in  information_site.get('system/platform/version', "Nop"):
+        # url for 4.4.8
+        subportalapiurl = "srv/api/sources?type=subportal"
+    elif "4.2." in information_site.get('system/platform/version', "Nop"):
+        # url for 4.2.8
+        subportalapiurl = "srv/api/sources/subportal"
+
     portals = requests.get(
-        gnurl + "srv/api/sources/subportal", cookies=cookies, headers=headers
+        gnurl + subportalapiurl, cookies=cookies, headers=headers
     )
     if portals.status_code != 200:
         return portals.text