diff --git a/package.json b/package.json
index 903d230..8d7367c 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
         "languages": [{
             "id": "gas",
             "aliases": ["GAS/AT&T x86/x64", "gas"],
-            "extensions": [".s",".S",".sx"],
+            "extensions": [".s",".S",".sx",".asm"],
             "configuration": "./language-configuration.json"
         }],
         "grammars": [{
@@ -28,4 +28,4 @@
         }]
     },
     "icon": "logo.png"
-}
\ No newline at end of file
+}