diff --git a/src/Umbraco.Web/UmbracoApplication.cs b/src/Umbraco.Web/UmbracoApplication.cs
index 41a4833ff4..6334f96d4b 100644
--- a/src/Umbraco.Web/UmbracoApplication.cs
+++ b/src/Umbraco.Web/UmbracoApplication.cs
@@ -35,8 +35,8 @@ namespace Umbraco.Web
             // Determine if we should use the sql main dom or the default
             var appSettingMainDomLock = globalSettings.MainDomLock;
 
-            var isLinux = RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
-            var mainDomLock = appSettingMainDomLock == "SqlMainDomLock" || isLinux == true
+            var isWindows = RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
+            var mainDomLock = appSettingMainDomLock == "SqlMainDomLock" || isWindows == false
                 ? (IMainDomLock)new SqlMainDomLock(logger, globalSettings, connectionStrings, dbProviderFactoryCreator, hostingEnvironment)
                 : new MainDomSemaphoreLock(logger, hostingEnvironment);