diff --git a/parsers/directive.js b/parsers/directive.js
index e971ec0..775dce8 100644
--- a/parsers/directive.js
+++ b/parsers/directive.js
@@ -19,13 +19,12 @@ function directiveName () {
   ])
 }
 
-// <directive> ::= <directive-name> [<spaces> <parameter>]*
 function directive () {
   return mona.sequence((s) => {
     const d = s(directiveName())
     const space = s(mona.spaces())
     const args = s(parameters())
-    // const nl = s(mona.eol())
+    const nl = s(mona.eol())
 
     return mona.value({
       directive: d,
diff --git a/parsers/instruction.js b/parsers/instruction.js
index 3bd2e04..7a1a852 100644
--- a/parsers/instruction.js
+++ b/parsers/instruction.js
@@ -25,9 +25,15 @@ function instructionName () {
 function instruction () {
   return mona.sequence((s) => {
     const i = s(instructionName())
-    const space = s(mona.maybe(mona.spaces()))
-    const args = s(mona.maybe(parameters()))
-    // const nl = s(mona.eol())
+    const args = s(
+      mona.maybe(
+        mona.and(
+          mona.spaces(),
+          parameters()
+        )
+      )
+    )
+    const nl = s(mona.eol())
     return mona.value({
       instruction: i,
       args: args
diff --git a/parsers/label.js b/parsers/label.js
index 6bfe881..5d6fd37 100644
--- a/parsers/label.js
+++ b/parsers/label.js
@@ -2,12 +2,16 @@ const mona = require('mona')
 
 function label () {
   return mona.sequence((s) => {
-    const label = s(mona.text(mona.alphanum()))
-    const end = s(mona.string(':'))
-    // const nl = s(mona.eol())
+    const label = s(
+      mona.followedBy(
+        mona.text(mona.alphanum(), {min: 1}),
+        mona.string(':'),
+        mona.eol()
+      )
+    )
 
     return mona.value({
-      label: `${label}${end}`
+      label
     })
   })
 }
diff --git a/parsers/parameters.js b/parsers/parameters.js
index acc42fa..0d12d73 100644
--- a/parsers/parameters.js
+++ b/parsers/parameters.js
@@ -16,14 +16,14 @@ function string () {
   return mona.between(
     mona.string('"'),
     mona.string('"'),
-    mona.text(quotedChar())
+    mona.text(quotedChar(), {min: 1})
   )
 }
 
 function hex () {
   return mona.and(
     mona.string('#$'),
-    mona.text(mona.digit(16))
+    mona.text(mona.digit(16), {min: 1})
   )
 }
 
@@ -31,14 +31,14 @@ function binary () {
   return mona.and(
     mona.maybe(mona.string('#')),
     mona.string('%'),
-    mona.text(mona.digit(2))
+    mona.text(mona.digit(2), {min: 1})
   )
 }
 
 function address () {
   return mona.and(
     mona.string('$'),
-    mona.text(mona.alphanum())
+    mona.text(mona.alphanum(), {min: 1})
   )
 }
 
@@ -51,7 +51,8 @@ function alphanum () {
     mona.not(hex()),
     mona.not(string()),
     mona.text(
-      mona.alphanum()
+      mona.alphanum(),
+      {min: 1}
     )
   )
 }
diff --git a/test/assembler.js b/test/assembler.js
index fc30a2f..7531d1f 100644
--- a/test/assembler.js
+++ b/test/assembler.js
@@ -15,7 +15,7 @@ tap.test('should parse the basics', (t) => {
       ]
     },
     {
-      label: 'RESET:'
+      label: 'RESET'
     }
   ])
 })
diff --git a/test/directive.js b/test/directive.js
index bef1308..dbbb371 100644
--- a/test/directive.js
+++ b/test/directive.js
@@ -4,7 +4,7 @@ const directiveParser = require('../parsers/directive')
 
 tap.test('will parse a directive', (t) => {
   t.plan(1)
-  t.deepEqual(mona.parse(directiveParser(), '.inesprg 1'), {
+  t.deepEqual(mona.parse(directiveParser(), '.inesprg 1\n'), {
     args: [
       {
         'bit': '1'
@@ -16,7 +16,7 @@ tap.test('will parse a directive', (t) => {
 
 tap.test('will parse a directive with direct address', (t) => {
   t.plan(1)
-  t.deepEqual(mona.parse(directiveParser(), '.inesprg $0000'), {
+  t.deepEqual(mona.parse(directiveParser(), '.inesprg $0000\n'), {
     args: [
       {
         'address': '0000'
@@ -28,7 +28,7 @@ tap.test('will parse a directive with direct address', (t) => {
 
 tap.test('will parse a directive with hex arg', (t) => {
   t.plan(1)
-  t.deepEqual(mona.parse(directiveParser(), '.inesprg #$FE'), {
+  t.deepEqual(mona.parse(directiveParser(), '.inesprg #$FE\n'), {
     args: [
       {
         'hex': 'FE'
@@ -40,7 +40,7 @@ tap.test('will parse a directive with hex arg', (t) => {
 
 tap.test('will parse a directive with binary arg', (t) => {
   t.plan(2)
-  t.deepEqual(mona.parse(directiveParser(), '.db %00010001'), {
+  t.deepEqual(mona.parse(directiveParser(), '.db %00010001\n'), {
     args: [
       {
         'binary': '00010001'
@@ -49,7 +49,7 @@ tap.test('will parse a directive with binary arg', (t) => {
     directive: '.db'
   })
 
-  t.deepEqual(mona.parse(directiveParser(), '.db #%00010001'), {
+  t.deepEqual(mona.parse(directiveParser(), '.db #%00010001\n'), {
     args: [
       {
         'binary': '00010001'
@@ -61,7 +61,7 @@ tap.test('will parse a directive with binary arg', (t) => {
 
 tap.test('will parse a directive with multiple args', (t) => {
   t.plan(1)
-  t.deepEqual(mona.parse(directiveParser(), '.db %00010001,%00010001,%00010001'), {
+  t.deepEqual(mona.parse(directiveParser(), '.db %00010001,%00010001,%00010001\n'), {
     args: [
       {
         'binary': '00010001'
@@ -79,7 +79,7 @@ tap.test('will parse a directive with multiple args', (t) => {
 
 tap.test('will parse a directive with multiple args with spaces between them', (t) => {
   t.plan(1)
-  t.deepEqual(mona.parse(directiveParser(), '.db %00010001, %00010001, %00010001'), {
+  t.deepEqual(mona.parse(directiveParser(), '.db %00010001, %00010001, %00010001\n'), {
     args: [
       {
         'binary': '00010001'
@@ -97,7 +97,7 @@ tap.test('will parse a directive with multiple args with spaces between them', (
 
 tap.test('will parse a directive with string arg', (t) => {
   t.plan(1)
-  t.deepEqual(mona.parse(directiveParser(), '.incbin "mario.chr"'), {
+  t.deepEqual(mona.parse(directiveParser(), '.incbin "mario.chr"\n'), {
     args: [
       {
         'string': 'mario.chr'
diff --git a/test/instruction.js b/test/instruction.js
index f849737..d02a5e7 100644
--- a/test/instruction.js
+++ b/test/instruction.js
@@ -5,7 +5,7 @@ const instructionParser = require('../parsers/instruction')
 tap.test('will parse an instruction', (t) => {
   t.plan(1)
   t.deepEqual(mona.parse(instructionParser(), 'sei\n'), {
-    args: null,
+    args: [],
     instruction: 'sei'
   })
 })
@@ -14,10 +14,9 @@ tap.test('will parse an instruction with args', (t) => {
   t.plan(1)
   t.deepEqual(mona.parse(instructionParser(), 'stx $2000\n'), {
     args: [
-      [
-        'address',
-        '2000'
-      ]
+      {
+        'address': '2000'
+      }
     ],
     instruction: 'stx'
   })
@@ -26,7 +25,14 @@ tap.test('will parse an instruction with args', (t) => {
 tap.test('will parse an instruction with multiple args', (t) => {
   t.plan(1)
   t.deepEqual(mona.parse(instructionParser(), 'lda background3, x\n'), {
-    args: ['background3', 'x'],
+    args: [
+      {
+        'alphanum': 'background3'
+      },
+      {
+        'alphanum': 'x'
+      }
+    ],
     instruction: 'lda'
   })
 })
diff --git a/test/label.js b/test/label.js
index 5c00495..71f3ecb 100644
--- a/test/label.js
+++ b/test/label.js
@@ -3,8 +3,8 @@ const mona = require('mona')
 const labelParser = require('../parsers/label')
 
 tap.test('should parse a label', (t) => {
-  t.plan(2)
-  t.deepEqual(mona.parse(labelParser(), 'SOMETHING:'), {
-    label: 'SOMETHING:'
+  t.plan(1)
+  t.deepEqual(mona.parse(labelParser(), 'SOMETHING:\n'), {
+    label: 'SOMETHING'
   })
 })