diff --git a/source/engine/grammar.ne b/source/engine/grammar.ne
index 7ac080ac9..385480366 100644
--- a/source/engine/grammar.ne
+++ b/source/engine/grammar.ne
@@ -6,10 +6,11 @@
 # @preprocessor esmodule
 
 @{%
-const {string, filteredVariable, variable, temporalVariable,  binaryOperation, unaryOperation, boolean, number, numberWithUnit, percentage } = require('./grammarFunctions')
+const {string, filteredVariable, date, variable, temporalVariable,  binaryOperation, unaryOperation, boolean, number, numberWithUnit, percentage } = require('./grammarFunctions')
 
 const moo = require("moo");
 
+const dateRegexp = /(?:0?[1-9]|[12][0-9]|3[01])\/(?:0?[1-9]|1[012])\/\d{4}/
 const letter = '[a-zA-Z\u00C0-\u017F]';
 const letterOrNumber = '[a-zA-Z\u00C0-\u017F0-9\']';
 const word = `${letter}(?:[\-']?${letterOrNumber}+)*`;
@@ -18,6 +19,7 @@ const words = `${word}(?:[\\s]?${wordOrNumber}+)*`
 const numberRegExp = '-?(?:[1-9][0-9]+|[0-9])(?:\\.[0-9]+)?';
 const percentageRegExp = numberRegExp + '\\%'
 const lexer = moo.compile({
+  date: dateRegexp,
   percentage: new RegExp(percentageRegExp),
   '(': '(',
   ')': ')',
@@ -46,6 +48,7 @@ main ->
   | Comparison {% id %}
   | NonNumericTerminal {% id %}
   | Negation {% id %}
+  | %date {% date %}
 
 NumericTerminal ->
 	 	Variable {% id %}
diff --git a/source/engine/grammarFunctions.js b/source/engine/grammarFunctions.js
index ba9504118..ed3d53266 100644
--- a/source/engine/grammarFunctions.js
+++ b/source/engine/grammarFunctions.js
@@ -62,6 +62,13 @@ export let percentage = ([{ value }]) => ({
 	}
 })
 
+export let date = ([{ value }]) => ({
+	constant: {
+		type: 'date',
+		nodeValue: value
+	}
+})
+
 export let boolean = nodeValue => () => ({
 	constant: {
 		type: 'boolean',
diff --git a/test/mécanismes/date.yaml b/test/mécanismes/date.yaml
new file mode 100644
index 000000000..f18b732ad
--- /dev/null
+++ b/test/mécanismes/date.yaml
@@ -0,0 +1,5 @@
+- test: Dates
+  formule: 01/01/2015
+  exemples:
+    - nom: Parse correctement les dates
+      valeur attendue: 01/01/2015