diff --git a/CHANGELOG b/CHANGELOG
index 139fa3dc51..00fb044aaf 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,4 @@
+* Add support for datetime_field to Many2One, Reference
 * Add calendar view
 * Move info-bar to the top
 * Add noeval to PYSONDecoder
diff --git a/src/model.js b/src/model.js
index ccaa3a4376..7cd6929cb6 100644
--- a/src/model.js
+++ b/src/model.js
@@ -1783,6 +1783,15 @@
             Sao.field.Many2One._super.set_client.call(this, record, value,
                     force_change);
         },
+        get_context: function(record) {
+            var context = Sao.field.Many2One._super.get_context.call(
+                this, record);
+            if (this.description.datetime_field) {
+                context._datetime = record.get_eval()[
+                    this.description.datetime_field];
+            }
+            return context;
+        },
         validation_domains: function(record, pre_validate) {
             return this.get_domains(record, pre_validate)[0];
         },
@@ -2297,6 +2306,15 @@
             return Sao.field.Reference._super.get_on_change_value.call(
                     this, record);
         },
+        get_context: function(record) {
+            var context = Sao.field.Reference._super.get_context.call(
+                this, record);
+            if (this.description.datetime_field) {
+                context._datetime = record.get_eval()[
+                    this.description.datetime_field];
+            }
+            return context;
+        },
         validation_domains: function(record, pre_validate) {
             return this.get_domains(record, pre_validate)[0];
         },