diff --git a/src/Squirrel/UpdateManager.InstallHelpers.cs b/src/Squirrel/UpdateManager.InstallHelpers.cs
index 126fd20c..5fd5195c 100644
--- a/src/Squirrel/UpdateManager.InstallHelpers.cs
+++ b/src/Squirrel/UpdateManager.InstallHelpers.cs
@@ -32,16 +32,12 @@ namespace Squirrel
             var zp = new ZipPackage(pkgPath);
 
             // NB: Sometimes the Uninstall key doesn't exist
-            using (var parentKey =
-                RegistryKey.OpenBaseKey(RegistryHive.CurrentUser, RegistryView.Default)
-                    .CreateSubKey("Uninstall", RegistryKeyPermissionCheck.ReadWriteSubTree)) {; }
+            using var parentKey = RegistryKey.OpenBaseKey(RegistryHive.CurrentUser, RegistryView.Default)
+                .CreateSubKey("Uninstall", RegistryKeyPermissionCheck.ReadWriteSubTree);
 
-            var key = RegistryKey.OpenBaseKey(RegistryHive.CurrentUser, RegistryView.Default)
+            using var key = RegistryKey.OpenBaseKey(RegistryHive.CurrentUser, RegistryView.Default)
                 .CreateSubKey(uninstallRegSubKey + "\\" + applicationName, RegistryKeyPermissionCheck.ReadWriteSubTree);
 
-            // we will try to find an "app.ico" from the package, write it to the local app dir, and then 
-            // use it for the uninstaller icon. If an app.ico does not exist, it will use a SquirrelAwareApp exe icon instead.
-
             var targetIco = Path.Combine(rootAppDirectory, "app.ico");
             if (File.Exists(targetIco))
                 key.SetValue("DisplayIcon", targetIco, RegistryValueKind.String);
@@ -65,7 +61,7 @@ namespace Squirrel
             var estimatedInstallInKb = compressedSizeInKb + (compressedSizeInKb / 0.38d * 2);
 
             var dwordsToWrite = new[] {
-                new { Key = "EstimatedSize", Value = (int)estimatedInstallInKb },
+                new { Key = "EstimatedSize", Value = (int) estimatedInstallInKb },
                 new { Key = "NoModify", Value = 1 },
                 new { Key = "NoRepair", Value = 1 },
                 new { Key = "Language", Value = 0x0409 },
@@ -74,10 +70,13 @@ namespace Squirrel
             foreach (var kvp in stringsToWrite) {
                 key.SetValue(kvp.Key, kvp.Value, RegistryValueKind.String);
             }
+
             foreach (var kvp in dwordsToWrite) {
                 key.SetValue(kvp.Key, kvp.Value, RegistryValueKind.DWord);
             }
 
+            key.Flush();
+
             return Task.FromResult(key);
         }
 
@@ -98,4 +97,4 @@ namespace Squirrel
             key.DeleteSubKeyTree(_config.AppId, false);
         }
     }
-}
+}
\ No newline at end of file