diff --git a/Duplicati/Library/Utility/Uri.cs b/Duplicati/Library/Utility/Uri.cs
index 53685b2ce..c05ecaab8 100644
--- a/Duplicati/Library/Utility/Uri.cs
+++ b/Duplicati/Library/Utility/Uri.cs
@@ -38,7 +38,7 @@ namespace Duplicati.Library.Utility
         /// <summary>
         /// A very lax version of a URL parser
         /// </summary>
-        private static readonly System.Text.RegularExpressions.Regex URL_PARSER = new System.Text.RegularExpressions.Regex(@"(?<scheme>[^:]+)://(((?<username>[^\:\?/]+)(\:(?<password>[^@\:\?/]*))?\@))?((?<hostname>[^/\?\:]+)(\:(?<port>\d+))?)?((?<path>[^\?]*))?(\?(?<query>.+))?");
+        private static readonly System.Text.RegularExpressions.Regex URL_PARSER = new System.Text.RegularExpressions.Regex(@"(?<scheme>[^:]+)://(((?<username>[^\:\?/]+)(\:(?<password>[^@\:\?/]*))?\@))?((?<hostname>(?:[^\[/\?\:][^/\?\:]*)|(?:\[[^\]]+\]))(\:(?<port>\d+))?)?((?<path>[^\?]*))?(\?(?<query>.+))?");
 
         /// <summary>
         /// The URL scheme, e.g. http
diff --git a/Duplicati/UnitTest/UriUtilityTests.cs b/Duplicati/UnitTest/UriUtilityTests.cs
index 1742eeb15..3e523bf76 100644
--- a/Duplicati/UnitTest/UriUtilityTests.cs
+++ b/Duplicati/UnitTest/UriUtilityTests.cs
@@ -69,5 +69,48 @@ namespace Duplicati.UnitTest
             Assert.AreEqual("/a", Library.Utility.UrlPath.Create(path1).Append(null).ToString());
             Assert.AreEqual("/b/", Library.Utility.UrlPath.Create(string.Empty).Append(path2).ToString());
         }
+
+        [Test]
+        [Category("UriUtility")]
+        public static void TestUriParse(
+            [Values("[1:2:3::4]", "127.0.0.1", "hostname")] string host,
+            [Values("", "user@", "user:pw@")] string user,
+            [Values("", ":80")] string port,
+            [Values("", "/path")] string path,
+            [Values("", "?query")] string query)
+        {
+            string uriStr = $"http://{user}{host}{port}{path}{query}";
+
+            var uri = new Library.Utility.Uri(uriStr);
+            Assert.AreEqual("http", uri.Scheme);
+            Assert.AreEqual(host, uri.Host);
+            if (port.Length != 0)
+            {
+                Assert.AreEqual(80, uri.Port);
+            }
+            else
+            {
+                Assert.AreEqual(-1, uri.Port);
+            }
+            Assert.AreEqual(path.TrimStart('/'), uri.Path);
+            Assert.AreEqual(query.Length == 0 ? null : query.TrimStart('?'), uri.Query);
+            if (user.Length == 0)
+            {
+                Assert.IsNull(uri.Username);
+                Assert.IsNull(uri.Password);
+            }
+            else
+            {
+                Assert.AreEqual("user", uri.Username);
+                if (user.Contains(":"))
+                {
+                    Assert.AreEqual("pw", uri.Password);
+                }
+                else
+                {
+                    Assert.IsNull(uri.Password);
+                }
+            }
+        }
     }
 }