diff --git a/Frends.LDAP.AddUserToGroups/Frends.LDAP.AddUserToGroups.Tests/UnitTests.cs b/Frends.LDAP.AddUserToGroups/Frends.LDAP.AddUserToGroups.Tests/UnitTests.cs
index 792dc03..ec7207c 100644
--- a/Frends.LDAP.AddUserToGroups/Frends.LDAP.AddUserToGroups.Tests/UnitTests.cs
+++ b/Frends.LDAP.AddUserToGroups/Frends.LDAP.AddUserToGroups.Tests/UnitTests.cs
@@ -148,11 +148,8 @@ private void DeleteTestUsers(string userDn, string groupDn)
 
         LdapAttribute memberAttr = groupEntry.GetAttribute("member");
         var currentMembers = memberAttr.StringValueArray;
-        foreach (var member in currentMembers)
-        {
-            if (member == userDn)
-                remove = true;
-        }
+        if (currentMembers.Where(e => e == userDn).Any())
+            remove = true;
 
         if (remove)
         {
diff --git a/Frends.LDAP.AddUserToGroups/Frends.LDAP.AddUserToGroups/AddUserToGroups.cs b/Frends.LDAP.AddUserToGroups/Frends.LDAP.AddUserToGroups/AddUserToGroups.cs
index f68ddac..af42667 100644
--- a/Frends.LDAP.AddUserToGroups/Frends.LDAP.AddUserToGroups/AddUserToGroups.cs
+++ b/Frends.LDAP.AddUserToGroups/Frends.LDAP.AddUserToGroups/AddUserToGroups.cs
@@ -91,7 +91,7 @@ private static bool UserExistsInGroup(LdapConnection connection, string userDn,
             {
                 LdapAttribute memberAttr = entry.GetAttribute("member");
                 var currentMembers = memberAttr.StringValueArray;
-                foreach (var member in currentMembers.Where(e => e == userDn))
+                if (currentMembers.Where(e => e == userDn).Any())
                     return true;
             }
         }