diff --git a/scripts/Windows/Config/Firefox/Install.ps1 b/scripts/Windows/Config/Firefox/Install.ps1
index 4a6fba84..d59a3a11 100644
--- a/scripts/Windows/Config/Firefox/Install.ps1
+++ b/scripts/Windows/Config/Firefox/Install.ps1
@@ -6,7 +6,6 @@ $appName = "Firefox";
 $extensions = @(
     ".htm",
     ".html",
-    ".shtml",
     ".svg",
     ".xht",
     ".xhtml"