diff --git a/ionic/components/datetime/datetime.ts b/ionic/components/datetime/datetime.ts
index 149b360e466..1c2cacf11d4 100644
--- a/ionic/components/datetime/datetime.ts
+++ b/ionic/components/datetime/datetime.ts
@@ -200,7 +200,7 @@ const DATETIME_VALUE_ACCESSOR = new Provider(
  * ```ts
  * @App({
  *   config: {
- *     monthNames: ['janeiro, 'fevereiro', 'mar\u00e7o', ... ],
+ *     monthNames: ['janeiro', 'fevereiro', 'mar\u00e7o', ... ],
  *     monthShortNames: ['jan', 'fev', 'mar', ... ],
  *     dayNames: ['domingo', 'segunda-feira', 'ter\u00e7a-feira', ... ],
  *     dayShortNames: ['dom', 'seg', 'ter', ... ],
@@ -215,10 +215,10 @@ const DATETIME_VALUE_ACCESSOR = new Provider(
  *   <ion-label>Período</ion-label>
  *   <ion-datetime displayFormat="DDDD MMM D, YYYY"
  *     [(ngModel)]="myDate"
- *     monthNames="['janeiro, 'fevereiro', 'mar\u00e7o', ... ]"
- *     monthShortNames="['jan', 'fev', 'mar', ... ]"
- *     dayNames="['domingo', 'segunda-feira', 'ter\u00e7a-feira', ... ]"
- *     dayShortNames="['dom', 'seg', 'ter', ... ]"
+ *     monthNames="[janeiro, fevereiro, mar\u00e7o, ... ]"
+ *     monthShortNames="[jan, fev, mar, ... ]"
+ *     dayNames="[domingo, segunda-feira, ter\u00e7a-feira, ... ]"
+ *     dayShortNames="[dom, seg, ter, ... ]"
  *     ></ion-datetime>
  * </ion-item>
  * ```
@@ -406,7 +406,7 @@ export class DateTime {
   @Input() dayShortNames: any;
 
   /**
-   * @input {any} Any addition options that the picker interface can accept.
+   * @input {any} Any additional options that the picker interface can accept.
    * See the [Picker API docs](../../picker/Picker) for the picker options.
    */
   @Input() pickerOptions: any = {};
diff --git a/ionic/util/datetime-util.ts b/ionic/util/datetime-util.ts
index bf3ade0bd27..cff0f334562 100644
--- a/ionic/util/datetime-util.ts
+++ b/ionic/util/datetime-util.ts
@@ -42,7 +42,7 @@ export function renderTextFormat(format: string, value: any, date: DateTimeData,
       value = (new Date(date.year, date.month - 1, date.day)).getDay();
 
       if (format === FORMAT_DDDD) {
-        return (isPresent(locale.dayShort) ? locale.dayShort : DAY_NAMES)[value];
+        return (isPresent(locale.dayNames) ? locale.dayNames : DAY_NAMES)[value];
       }
 
       return (isPresent(locale.dayShortNames) ? locale.dayShortNames : DAY_SHORT_NAMES)[value];
@@ -402,7 +402,7 @@ export interface DateTimeData {
 export interface LocaleData {
   monthNames?: string[];
   monthShortNames?: string[];
-  dayShort?: string[];
+  dayNames?: string[];
   dayShortNames?: string[];
 }