--- a/lastpass-binary-component-4.19.0.ebuild	2019-06-15 15:15:34.793801763 +0300
+++ b/lastpass-binary-component-4.19.0.ebuild	2019-06-15 15:15:24.534822646 +0300
@@ -98,7 +98,8 @@
 	EOF
 	# Install the app manifest for Firefox
 	# https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Native_manifests#Manifest_location
-	insinto /usr/lib/mozilla/native-messaging-hosts/
+	use amd64 && lib_dir="lib64" || lib_dir="lib"
+	insinto /usr/${lib_dir}/mozilla/native-messaging-hosts/
 	doins "${T}"/com.lastpass.nplastpass.json
 }