diff --git a/lang/en.yml b/lang/en.yml
new file mode 100644
index 0000000..eb0edc6
--- /dev/null
+++ b/lang/en.yml
@@ -0,0 +1,25 @@
+en:
+  MathSpamProtection:
+    EIGHT: eight
+    EIGHTEEN: eighteen
+    ELEVEN: eleven
+    FIFTEEN: fifteen
+    FIVE: five
+    FOUR: four
+    FOURTEEN: fourteen
+    NINE: nine
+    ONE: one
+    SEVEN: seven
+    SEVENTEEN: seventeen
+    SIX: six
+    SIXTEEN: sixteen
+    TEN: ten
+    THIRTEEN: thirteen
+    THREE: three
+    TWELVE: twelve
+    TWO: two
+    WHATIS: 'what is %s plus %s?'
+    ZERO: zero
+  MathSpamProtectionField:
+    INCORRECTSOLUTION: 'Incorrect solution to the spam protection question, please try again.'
+    SPAMQUESTION: 'Spam protection question: %s'
diff --git a/lang/en_US.php b/lang/en_US.php
deleted file mode 100644
index 2deb5cb..0000000
--- a/lang/en_US.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-
-global $lang;
-
-$lang['en_US']['MathSpamProtection']['ZERO'] = 			'zero';
-$lang['en_US']['MathSpamProtection']['ONE'] = 			'one';
-$lang['en_US']['MathSpamProtection']['TWO'] = 			'two';
-$lang['en_US']['MathSpamProtection']['THREE'] = 		'three';
-$lang['en_US']['MathSpamProtection']['FOUR'] = 			'four';
-$lang['en_US']['MathSpamProtection']['FIVE'] = 			'five';
-$lang['en_US']['MathSpamProtection']['SIX'] = 			'six';
-$lang['en_US']['MathSpamProtection']['SEVEN'] = 		'seven';
-$lang['en_US']['MathSpamProtection']['EIGHT'] = 		'eight';
-$lang['en_US']['MathSpamProtection']['NINE'] = 			'nine';
-$lang['en_US']['MathSpamProtection']['TEN'] = 			'ten';
-$lang['en_US']['MathSpamProtection']['ELEVEN'] = 		'eleven';
-$lang['en_US']['MathSpamProtection']['TWELVE'] = 		'twelve';
-$lang['en_US']['MathSpamProtection']['THIRTEEN'] = 	'thirteen';
-$lang['en_US']['MathSpamProtection']['FOURTEEN'] = 	'fourteen';
-$lang['en_US']['MathSpamProtection']['FIFTEEN'] = 	'fifteen';
-$lang['en_US']['MathSpamProtection']['SIXTEEN'] = 	'sixteen';
-$lang['en_US']['MathSpamProtection']['SEVENTEEN'] = 'seventeen';
-$lang['en_US']['MathSpamProtection']['EIGHTEEN'] = 	'eighteen';
-$lang['en_US']['MathSpamProtection']['WHATIS'] = 'What is %s plus %s?';
-$lang['en_US']['MathSpamProtectionField']['SPAMQUESTION'] = 'Spam protection question: %s';
-$lang['en_US']['MathSpamProtectionField']['INCORRECTSOLUTION'] = 'Incorrect solution to the spam protection question, please try again.';
-
-?>
\ No newline at end of file
diff --git a/lang/es.yml b/lang/es.yml
new file mode 100644
index 0000000..1124d33
--- /dev/null
+++ b/lang/es.yml
@@ -0,0 +1,25 @@
+es:
+  MathSpamProtection:
+    EIGHT: ocho
+    EIGHTEEN: dieciocho
+    ELEVEN: once
+    FIFTEEN: quince
+    FIVE: cinco
+    FOUR: cuatro
+    FOURTEEN: catorce
+    NINE: nueve
+    ONE: uno
+    SEVEN: siete
+    SEVENTEEN: diecisiete
+    SIX: seis
+    SIXTEEN: 'diecis&eacute;is'
+    TEN: diez
+    THIRTEEN: trece
+    THREE: tres
+    TWELVE: doce
+    TWO: dos
+    WHATIS: '&iquest;Cu&aacute;nto suman %s y %s?'
+    ZERO: cero
+  MathSpamProtectionField:
+    INCORRECTSOLUTION: 'Respuesta err&oacute;nea, int&eacute;ntelo de nuevo.'
+    SPAMQUESTION: 'Pregunta anti-spam: %s'
\ No newline at end of file
diff --git a/lang/es_ES.php b/lang/es_ES.php
deleted file mode 100644
index 31c6844..0000000
--- a/lang/es_ES.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-
-global $lang;
-
-$lang['es_ES']['MathSpamProtection']['ZERO'] = 'cero';
-$lang['es_ES']['MathSpamProtection']['ONE'] = 'uno';
-$lang['es_ES']['MathSpamProtection']['TWO'] = 'dos';
-$lang['es_ES']['MathSpamProtection']['THREE'] = 'tres';
-$lang['es_ES']['MathSpamProtection']['FOUR'] = 'cuatro';
-$lang['es_ES']['MathSpamProtection']['FIVE'] = 'cinco';
-$lang['es_ES']['MathSpamProtection']['SIX'] = 'seis';
-$lang['es_ES']['MathSpamProtection']['SEVEN'] = 'siete';
-$lang['es_ES']['MathSpamProtection']['EIGHT'] = 'ocho';
-$lang['es_ES']['MathSpamProtection']['NINE'] = 'nueve';
-$lang['es_ES']['MathSpamProtection']['TEN'] = 'diez';
-$lang['es_ES']['MathSpamProtection']['ELEVEN'] = 'once';
-$lang['es_ES']['MathSpamProtection']['TWELVE'] = 'doce';
-$lang['es_ES']['MathSpamProtection']['THIRTEEN'] = 'trece';
-$lang['es_ES']['MathSpamProtection']['FOURTEEN'] = 'catorce';
-$lang['es_ES']['MathSpamProtection']['FIFTEEN'] = 'quince';
-$lang['es_ES']['MathSpamProtection']['SIXTEEN'] = 'diecis&eacute;is';
-$lang['es_ES']['MathSpamProtection']['SEVENTEEN'] = 'diecisiete';
-$lang['es_ES']['MathSpamProtection']['EIGHTEEN'] = 'dieciocho';
-$lang['es_ES']['MathSpamProtection']['WHATIS'] = '&iquest;Cuánto suman %s y %s?';
-$lang['es_ES']['MathSpamProtectionField']['SPAMQUESTION'] = 'Pregunta anti-spam: %s';
-$lang['es_ES']['MathSpamProtectionField']['INCORRECTSOLUTION'] = 'Respuesta err&oacute;nea, int&eacute;ntelo de nuevo.';
-
-?>
\ No newline at end of file
diff --git a/lang/fr.yml b/lang/fr.yml
new file mode 100644
index 0000000..161842e
--- /dev/null
+++ b/lang/fr.yml
@@ -0,0 +1,25 @@
+fr:
+  MathSpamProtection:
+    EIGHT: huit
+    EIGHTEEN: dix-huit
+    ELEVEN: onze
+    FIFTEEN: quinze
+    FIVE: cinq
+    FOUR: quatre
+    FOURTEEN: quatorze
+    NINE: neuf
+    ONE: un
+    SEVEN: sept
+    SEVENTEEN: seventeen
+    SIX: six
+    SIXTEEN: seize
+    TEN: dix
+    THIRTEEN: treize
+    THREE: trois
+    TWELVE: douze
+    TWO: deux
+    WHATIS: 'Combien font %s plus %s&nbsp?'
+    ZERO: z&eacute;ro
+  MathSpamProtectionField:
+    INCORRECTSOLUTION: 'Mauvaise r&eacute;ponse, essayez &agrave; nouveau.'
+    SPAMQUESTION: 'Question anti-spam&nbsp;: %s'
\ No newline at end of file
diff --git a/lang/fr_FR.php b/lang/fr_FR.php
deleted file mode 100644
index 507d451..0000000
--- a/lang/fr_FR.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-
-global $lang;
-
-$lang['fr_FR']['MathSpamProtection']['ZERO'] = 'z&eacute;ro';
-$lang['fr_FR']['MathSpamProtection']['ONE'] = 'un';
-$lang['fr_FR']['MathSpamProtection']['TWO'] = 'deux';
-$lang['fr_FR']['MathSpamProtection']['THREE'] = 'trois';
-$lang['fr_FR']['MathSpamProtection']['FOUR'] = 'quatre';
-$lang['fr_FR']['MathSpamProtection']['FIVE'] = 'cinq';
-$lang['fr_FR']['MathSpamProtection']['SIX'] = 'six';
-$lang['fr_FR']['MathSpamProtection']['SEVEN'] = 'sept';
-$lang['fr_FR']['MathSpamProtection']['EIGHT'] = 'huit';
-$lang['fr_FR']['MathSpamProtection']['NINE'] = 'neuf';
-$lang['fr_FR']['MathSpamProtection']['TEN'] = 'dix';
-$lang['fr_FR']['MathSpamProtection']['ELEVEN'] = 'onze';
-$lang['fr_FR']['MathSpamProtection']['TWELVE'] = 'douze';
-$lang['fr_FR']['MathSpamProtection']['THIRTEEN'] = 'treize';
-$lang['fr_FR']['MathSpamProtection']['FOURTEEN'] = 'quatorze';
-$lang['fr_FR']['MathSpamProtection']['FIFTEEN'] = 'quinze';
-$lang['fr_FR']['MathSpamProtection']['SIXTEEN'] = 'seize';
-$lang['fr_FR']['MathSpamProtection']['SEVENTEEN'] = 'dix-sept';
-$lang['fr_FR']['MathSpamProtection']['EIGHTEEN'] = 'dix-huit';
-$lang['fr_FR']['MathSpamProtection']['WHATIS'] = 'Combien font %s plus %s'.'&nbsp?';
-$lang['fr_FR']['MathSpamProtectionField']['SPAMQUESTION'] = 'Question anti-spam&nbsp;: %s';
-$lang['fr_FR']['MathSpamProtectionField']['INCORRECTSOLUTION'] = 'Mauvaise r&eacute;ponse, essayez &agrave; nouveau.';
-
-?>
\ No newline at end of file
diff --git a/lang/nl.yml b/lang/nl.yml
new file mode 100644
index 0000000..18d92f1
--- /dev/null
+++ b/lang/nl.yml
@@ -0,0 +1,25 @@
+nl:
+  MathSpamProtection:
+    EIGHT: acht
+    EIGHTEEN: achtien
+    ELEVEN: elf
+    FIFTEEN: vijftien
+    FIVE: vijf
+    FOUR: vier
+    FOURTEEN: veertien
+    NINE: negen
+    ONE: een
+    SEVEN: zeven
+    SEVENTEEN: zeventien
+    SIX: zes
+    SIXTEEN: zestien
+    TEN: tien
+    THIRTEEN: dertien
+    THREE: drie
+    TWELVE: twaalf
+    TWO: twee
+    WHATIS: 'hoeveel is %s plus %s?'
+    ZERO: nul
+  MathSpamProtectionField:
+    INCORRECTSOLUTION: 'Onjuist antwoord op de anti-spam vraag, probeer opnieuw.'
+    SPAMQUESTION: 'Anti-spam vraag: %s'
diff --git a/lang/nl_NL.php b/lang/nl_NL.php
deleted file mode 100644
index 52684e3..0000000
--- a/lang/nl_NL.php
+++ /dev/null
@@ -1,28 +0,0 @@
-<?php
-
-global $lang;
-
-$lang['nl_NL']['MathSpamProtection']['ZERO'] = 			'nul';
-$lang['nl_NL']['MathSpamProtection']['ONE'] = 			'een';
-$lang['nl_NL']['MathSpamProtection']['TWO'] = 			'twee';
-$lang['nl_NL']['MathSpamProtection']['THREE'] = 		'drie';
-$lang['nl_NL']['MathSpamProtection']['FOUR'] = 			'vier';
-$lang['nl_NL']['MathSpamProtection']['FIVE'] = 			'vijf';
-$lang['nl_NL']['MathSpamProtection']['SIX'] = 			'zes';
-$lang['nl_NL']['MathSpamProtection']['SEVEN'] = 		'zeven';
-$lang['nl_NL']['MathSpamProtection']['EIGHT'] = 		'acht';
-$lang['nl_NL']['MathSpamProtection']['NINE'] = 			'negen';
-$lang['nl_NL']['MathSpamProtection']['TEN'] = 			'tien';
-$lang['nl_NL']['MathSpamProtection']['ELEVEN'] = 		'elf';
-$lang['nl_NL']['MathSpamProtection']['TWELVE'] = 		'twaalf';
-$lang['nl_NL']['MathSpamProtection']['THIRTEEN'] = 	'dertien';
-$lang['nl_NL']['MathSpamProtection']['FOURTEEN'] = 	'veertien';
-$lang['nl_NL']['MathSpamProtection']['FIFTEEN'] = 	'vijftien';
-$lang['nl_NL']['MathSpamProtection']['SIXTEEN'] = 	'zestien';
-$lang['nl_NL']['MathSpamProtection']['SEVENTEEN'] = 'zeventien';
-$lang['nl_NL']['MathSpamProtection']['EIGHTEEN'] = 	'achttien';
-$lang['nl_NL']['MathSpamProtection']['WHATIS'] = 'Hoeveel is %s plus %s?';
-$lang['nl_NL']['MathSpamProtectionField']['SPAMQUESTION'] = 'Anti-spam vraag: %s';
-$lang['nl_NL']['MathSpamProtectionField']['INCORRECTSOLUTION'] = 'Onjuist antwoord op de anti-spam vraag, probeer opnieuw.';
-
-?>
\ No newline at end of file