diff --git a/src/iconsManifest/supportedExtensions.ts b/src/iconsManifest/supportedExtensions.ts
index e56ee66ca9..3e60364df5 100644
--- a/src/iconsManifest/supportedExtensions.ts
+++ b/src/iconsManifest/supportedExtensions.ts
@@ -4356,10 +4356,16 @@ export const extensions: IFileCollection = {
     },
     {
       icon: 'sln',
-      extensions: ['sln', 'slnx'],
+      extensions: ['sln'],
       languages: [languages.sln],
       format: FileFormat.svg,
     },
+    {
+      icon: 'sln',
+      extensions: ['slnx'],
+      languages: [languages.xml],
+      format: FileFormat.svg,
+    },
     {
       icon: 'sln2',
       extensions: ['sln'],