diff --git a/VERSION b/VERSION
index 485cda6..7fe8a15 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.352
+0.1.353
diff --git a/mothership/cmd/mothership/main.go b/mothership/cmd/mothership/main.go
index a333f3c..5fa87ef 100644
--- a/mothership/cmd/mothership/main.go
+++ b/mothership/cmd/mothership/main.go
@@ -311,10 +311,12 @@ func serveEmbeddedFile(w http.ResponseWriter, r *http.Request, filename string)
 			http.NotFound(w, r)
 			return
 		}
-		http.ServeContent(w, r, filename, stat.ModTime(), file.(interface {
-			Len() int64
-			io.ReadSeeker
-		}))
+		rs, ok := file.(io.ReadSeeker)
+		if !ok {
+			http.NotFound(w, r)
+			return
+		}
+		http.ServeContent(w, r, filename, stat.ModTime(), rs)
 		return
 	}