diff --git a/contenttype.go b/contenttype.go
index bca3c3c..964a823 100755
--- a/contenttype.go
+++ b/contenttype.go
@@ -64,6 +64,8 @@ func SetContentTypeIfMedia(w http.ResponseWriter, r *http.Request) {
 		v = "application/octet-stream"
 	case ".xml", ".rss", ".feed", ".rdf":
 		v = "application/rss+xml"
+	case ".wasm":
+		v = "application/wasm"
 	default:
 		return
 	}