diff --git a/vendor/github.com/jessevdk/go-flags/termsize_nosysioctl.go b/vendor/github.com/jessevdk/go-flags/termsize_nosysioctl.go
new file mode 100644
index 0000000..c1ff186
--- /dev/null
+++ b/vendor/github.com/jessevdk/go-flags/termsize_nosysioctl.go
@@ -0,0 +1,7 @@
+// +build plan9 appengine wasm
+
+package flags
+
+func getTerminalColumns() int {
+	return 80
+}