diff --git a/index.js b/index.js
index 9ff1179..edcae82 100644
--- a/index.js
+++ b/index.js
@@ -61,8 +61,8 @@ function parsePRI(raw) {
     // PRI means Priority, includes Facility and Severity
     // e.g. 10110111 =  10110: facility 111: severity
     var binary = (~~raw).toString(2)
-    var facility = parseInt(binary.substr(binary.length - 3), 2)
-    var severity = parseInt(binary.substring(0, binary.length - 3), 2)
+    var severity = parseInt(binary.substr(binary.length - 3), 2)
+    var facility = parseInt(binary.substring(0, binary.length - 3), 2) || 0
     return [facility, severity]
 }
 
diff --git a/test/index.js b/test/index.js
index 637eaf7..df99ec7 100644
--- a/test/index.js
+++ b/test/index.js
@@ -1,39 +1,62 @@
 var dgram = require('dgram')
 var assert = require('assert')
-let mocha = require( 'mocha' )
 var Syslogd = require('../')
 
 describe( "given a syslogd service", () => {
-	it( "recieves and processes messages", (done) => {
+	it( "receives and processes messages", (done) => {
 		var time = 'Dec 15 10:58:44'
 		var testMsg = '<183>' + time + ' hostname tag: info'
 		const port = 10514
 
 		Syslogd(function(info) {
-		    //console.log(info)
 		    info.port = null // port is random
-		    var shouldRet = {
-			  facility: 7
-			, severity: 22
+		    var shouldReturn = {
+			  facility: 22
+			, severity: 7
 			, tag: 'tag'
-			, time: new Date(time + ' ' + new Date().getFullYear())
+			, time: new Date( time + ' ' + new Date().getFullYear() )
 			, hostname: 'hostname'
 			, address: '127.0.0.1'
 			, family: 'IPv4'
 			, port: null
-			, size: 39
+			, size: testMsg.length
 			, msg: 'info'
 		    }
-		    assert.deepEqual(shouldRet, info)
+		    assert.deepStrictEqual( info, shouldReturn )
 			done()
-		}).listen( port, function(err) { // sudo
-		    //console.log('listen', err)
-		    assert(!err)
-		    var client = dgram.createSocket('udp4')
-		    var buffer = new Buffer(testMsg)
-		    client.send(buffer, 0, buffer.length, port, 'localhost', function(err, bytes) {
-			//console.log('send', err, bytes)
-		    })
+		}).listen( port, function(err) {
+		    assert.ifError( err )
+		    var client = dgram.createSocket( 'udp4' )
+		    var buffer = Buffer.from( testMsg )
+		    client.send( buffer, 0, buffer.length, port, 'localhost' )
+		})
+	})
+	it( "decodes correctly with short PRI", (done) => {
+		var time = 'May 29 14:52:40'
+		var testMsg = '<4>' + time + ' hostname tag: info'
+		const port = 10515
+
+		Syslogd(function(info) {
+		    info.port = null // port is random
+		    var shouldReturn = {
+			  facility: 0
+			, severity: 4
+			, tag: 'tag'
+			, time: new Date( time + ' ' + new Date().getFullYear() )
+			, hostname: 'hostname'
+			, address: '127.0.0.1'
+			, family: 'IPv4'
+			, port: null
+			, size: testMsg.length
+			, msg: 'info'
+		    }
+		    assert.deepStrictEqual( info, shouldReturn )
+			done()
+		}).listen( port, function(err) {
+		    assert.ifError( err )
+		    var client = dgram.createSocket( 'udp4' )
+		    var buffer = Buffer.from( testMsg )
+		    client.send( buffer, 0, buffer.length, port, 'localhost' )
 		})
 	})
 })
diff --git a/test/tcp.js b/test/tcp.js
index 15e16d5..6f93339 100644
--- a/test/tcp.js
+++ b/test/tcp.js
@@ -1,6 +1,5 @@
 // vim: set ft=javascript tabstop=4 softtabstop=4 shiftwidth=4 autoindent:
 var assert = require('assert')
-let mocha = require( 'mocha' )
 var net = require('net')
 
 describe( "given a TCP Syslog Server", () => {
@@ -16,11 +15,11 @@ describe( "given a TCP Syslog Server", () => {
 			info.port = null // port is random
 			info.address = null
 			info.family = null
-			var shouldRet = {
-				  facility: 7
-				, severity: 22
+			var shouldReturn = {
+				  facility: 22
+				, severity: 7
 				, tag: 'tag'
-				, time: new Date(time + ' ' + new Date().getFullYear())
+				, time: new Date( time + ' ' + new Date().getFullYear() )
 				, hostname: 'hostname'
 				, address: null
 				, family: null
@@ -28,13 +27,13 @@ describe( "given a TCP Syslog Server", () => {
 				, size: testMsg.length
 				, msg: 'info'
 			}
-			assert.deepEqual(shouldRet, info)
+			assert.deepStrictEqual( info, shouldReturn )
 			done()
 		}).listen( port, function(err, service ) { // sudo
 			assert.ifError( err )
-			var buffer = new Buffer(testMsg)
+			var buffer = Buffer.from( testMsg )
 			var client = net.connect( service.port, 'localhost', function() {
-				client.write(buffer, function(err, bytes) {
+				client.write( buffer, function(err) {
 					assert.ifError( err )
 					client.end()
 				})