diff --git a/Duplicati/CommandLine/DatabaseTool/Scripts/Server/8. Check for encrypted fields.sql b/Duplicati/CommandLine/DatabaseTool/Scripts/Server/8. Check for encrypted fields.sql
index aae55071d..a5532a043 100644
--- a/Duplicati/CommandLine/DatabaseTool/Scripts/Server/8. Check for encrypted fields.sql	
+++ b/Duplicati/CommandLine/DatabaseTool/Scripts/Server/8. Check for encrypted fields.sql	
@@ -1,5 +1,5 @@
 /* This script returns an error message if any encrypted values are found */
-SELECT "Database is encrypted and must be decrypted before it can be downgraded" AS "Message"
+SELECT 'Database is encrypted and must be decrypted before it can be downgraded' AS "Message"
 FROM Option WHERE Value LIKE 'enc-v1:%'
 UNION ALL
 SELECT TargetURL
diff --git a/Duplicati/Library/Backend/AzureBlob/AzureBlobBackend.cs b/Duplicati/Library/Backend/AzureBlob/AzureBlobBackend.cs
index 060ced960..99fe7a695 100644
--- a/Duplicati/Library/Backend/AzureBlob/AzureBlobBackend.cs
+++ b/Duplicati/Library/Backend/AzureBlob/AzureBlobBackend.cs
@@ -119,7 +119,7 @@ namespace Duplicati.Library.Backend.AzureBlob
             if (string.IsNullOrWhiteSpace(storageClass))
                 return DEFAULT_ARCHIVE_CLASSES;
 
-            return new HashSet<AccessTier>(storageClass.Split([','], StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries).Select(x => new AccessTier(x)));
+            return new HashSet<AccessTier>(storageClass.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries).Select(x => new AccessTier(x)));
         }
 
         public string DisplayName => Strings.AzureBlobBackend.DisplayName;
diff --git a/Duplicati/Library/Backend/S3/S3AwsClient.cs b/Duplicati/Library/Backend/S3/S3AwsClient.cs
index ae2c5957a..3aa87e9cf 100644
--- a/Duplicati/Library/Backend/S3/S3AwsClient.cs
+++ b/Duplicati/Library/Backend/S3/S3AwsClient.cs
@@ -127,7 +127,7 @@ namespace Duplicati.Library.Backend
             if (string.IsNullOrWhiteSpace(storageClass))
                 return DEFAULT_ARCHIVE_CLASSES;
 
-            return new HashSet<S3StorageClass>(storageClass.Split([','], StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries).Select(x => new S3StorageClass(x)));
+            return new HashSet<S3StorageClass>(storageClass.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries).Select(x => new S3StorageClass(x)));
         }
 
         /// <inheritdoc/>
diff --git a/Duplicati/UnitTest/DatabaseToolTests.cs b/Duplicati/UnitTest/DatabaseToolTests.cs
index 4d78a45be..11c069733 100644
--- a/Duplicati/UnitTest/DatabaseToolTests.cs
+++ b/Duplicati/UnitTest/DatabaseToolTests.cs
@@ -39,14 +39,14 @@ namespace Duplicati.UnitTest
             cmd.CommandText = LocalSchemaV12;
             cmd.ExecuteNonQuery();
 
-            await Program.Main(["upgrade", dbfile, "--no-backups"]);
-            await Program.Main(["downgrade", dbfile, "--server-version=6", "--local-version=12", "--no-backups"]);
-            await Program.Main(["upgrade", dbfile, "--no-backups"]);
+            Assert.AreEqual(0, await Program.Main(["upgrade", dbfile, "--no-backups"]));
+            Assert.AreEqual(0, await Program.Main(["downgrade", dbfile, "--server-version=6", "--local-version=12", "--no-backups"]));
+            Assert.AreEqual(0, await Program.Main(["upgrade", dbfile, "--no-backups"]));
 
-            await Program.Main(["list", dbfile]);
-            await Program.Main(["list", dbfile, "RemoteVolume"]);
-            await Program.Main(["list", dbfile, "RemoteVolume", "--output-json"]);
-            await Program.Main(["execute", dbfile, "SELECT * FROM RemoteVolume", "--output-json"]);
+            Assert.AreEqual(0, await Program.Main(["list", dbfile]));
+            Assert.AreEqual(0, await Program.Main(["list", dbfile, "RemoteVolume"]));
+            Assert.AreEqual(0, await Program.Main(["list", dbfile, "RemoteVolume", "--output-json"]));
+            Assert.AreEqual(0, await Program.Main(["execute", dbfile, "SELECT * FROM RemoteVolume", "--output-json"]));
         }
 
         [Test]
@@ -59,14 +59,14 @@ namespace Duplicati.UnitTest
             cmd.CommandText = ServerSchemaV6;
             cmd.ExecuteNonQuery();
 
-            await Program.Main(["upgrade", dbfile, "--no-backups"]);
-            await Program.Main(["downgrade", dbfile, "--server-version=6", "--local-version=12", "--no-backups"]);
-            await Program.Main(["upgrade", dbfile, "--no-backups"]);
+            Assert.AreEqual(0, await Program.Main(["upgrade", dbfile, "--no-backups"]));
+            Assert.AreEqual(0, await Program.Main(["downgrade", dbfile, "--server-version=6", "--local-version=12", "--no-backups"]));
+            Assert.AreEqual(0, await Program.Main(["upgrade", dbfile, "--no-backups"]));
 
-            await Program.Main(["list", dbfile]);
-            await Program.Main(["list", dbfile, "Source"]);
-            await Program.Main(["list", dbfile, "Source", "--output-json"]);
-            await Program.Main(["execute", dbfile, "SELECT * FROM Source", "--output-json"]);
+            Assert.AreEqual(0, await Program.Main(["list", dbfile]));
+            Assert.AreEqual(0, await Program.Main(["list", dbfile, "Source"]));
+            Assert.AreEqual(0, await Program.Main(["list", dbfile, "Source", "--output-json"]));
+            Assert.AreEqual(0, await Program.Main(["execute", dbfile, "SELECT * FROM Source", "--output-json"]));
         }
 
         /// <summary>