diff --git a/pym/cl_ldap.py b/pym/cl_ldap.py
index 94f6281..a67ff7b 100644
--- a/pym/cl_ldap.py
+++ b/pym/cl_ldap.py
@@ -10791,7 +10791,8 @@ with another option."))
             for uid in memberUid:
                 if not uid in uniqueUid:
                     uniqueUid.append(uid)
-            searchRes[0][0][1]['memberUid'] = uniqueUid
+            if uniqueUid:
+                searchRes[0][0][1]['memberUid'] = uniqueUid
         for info in searchRes:
             for i in range(lenRetrAttrs):
                 attr = retrAttrs[i]
@@ -10988,7 +10989,8 @@ with another option."))
                 for uid in memberUid:
                     if not uid in uniqueUid:
                         uniqueUid.append(uid)
-                info[0][1]['memberUid'] = uniqueUid
+                if uniqueUid:
+                    info[0][1]['memberUid'] = uniqueUid
             for attr in retrAttrs:
                 if attr in info[0][1]:
                     ldapValue = info[0][1][attr]