diff --git a/boot/boot.js b/boot/boot.js
index c065cfb61..353e5e0f6 100644
--- a/boot/boot.js
+++ b/boot/boot.js
@@ -2301,6 +2301,7 @@ $tw.boot.initStartup = function(options) {
 	$tw.utils.registerFileType("image/heic","base64",".heic",{flags:["image"]});
 	$tw.utils.registerFileType("image/heif","base64",".heif",{flags:["image"]});
 	$tw.utils.registerFileType("image/svg+xml","utf8",".svg",{flags:["image"]});
+	$tw.utils.registerFileType("image/vnd.microsoft.icon","base64",".ico",{flags:["image"]});
 	$tw.utils.registerFileType("image/x-icon","base64",".ico",{flags:["image"]});
 	$tw.utils.registerFileType("application/font-woff","base64",".woff");
 	$tw.utils.registerFileType("application/x-font-ttf","base64",".woff");
diff --git a/core/modules/parsers/imageparser.js b/core/modules/parsers/imageparser.js
index 0208d47e2..e3b8fb60a 100644
--- a/core/modules/parsers/imageparser.js
+++ b/core/modules/parsers/imageparser.js
@@ -39,6 +39,7 @@ exports["image/webp"] = ImageParser;
 exports["image/heic"] = ImageParser;
 exports["image/heif"] = ImageParser;
 exports["image/x-icon"] = ImageParser;
+exports["image/vnd.microsoft.icon"] = ImageParser;
 
 })();