diff --git a/sormas-api/src/main/java/de/symeda/sormas/api/person/PersonDto.java b/sormas-api/src/main/java/de/symeda/sormas/api/person/PersonDto.java
index 27363cfeeed..a4895af076b 100644
--- a/sormas-api/src/main/java/de/symeda/sormas/api/person/PersonDto.java
+++ b/sormas-api/src/main/java/de/symeda/sormas/api/person/PersonDto.java
@@ -195,6 +195,8 @@ public class PersonDto extends PseudonymizableDto implements IsPerson {
 	@SensitiveData
 	private Integer birthdateDD;
 	@Outbreaks
+	@PersonalData
+	@SensitiveData
 	private Integer birthdateMM;
 	@Outbreaks
 	private Integer birthdateYYYY;
diff --git a/sormas-ui/src/main/java/de/symeda/sormas/ui/person/PersonEditForm.java b/sormas-ui/src/main/java/de/symeda/sormas/ui/person/PersonEditForm.java
index c223d42ccba..283d00c1d3c 100644
--- a/sormas-ui/src/main/java/de/symeda/sormas/ui/person/PersonEditForm.java
+++ b/sormas-ui/src/main/java/de/symeda/sormas/ui/person/PersonEditForm.java
@@ -296,13 +296,8 @@ protected void addFields() {
 		ComboBox birthDateMonth = addField(PersonDto.BIRTH_DATE_MM, ComboBox.class);
 		// @TODO: Done for nullselection Bug, fixed in Vaadin 7.7.3
 		birthDateMonth.setNullSelectionAllowed(true);
-		birthDateMonth.addItems(DateHelper.getMonthsInYear());
-		birthDateMonth.setPageLength(12);
 		birthDateMonth.setInputPrompt(I18nProperties.getString(Strings.month));
 		birthDateMonth.setCaption("");
-		DateHelper.getMonthsInYear()
-			.forEach(month -> birthDateMonth.setItemCaption(month, de.symeda.sormas.api.Month.values()[month - 1].toString()));
-		setItemCaptionsForMonths(birthDateMonth);
 		ComboBox birthDateYear = addField(PersonDto.BIRTH_DATE_YYYY, ComboBox.class);
 		birthDateYear.setCaption(I18nProperties.getPrefixCaption(PersonDto.I18N_PREFIX, PersonDto.BIRTH_DATE));
 		// @TODO: Done for nullselection Bug, fixed in Vaadin 7.7.3
@@ -446,6 +441,13 @@ protected void addFields() {
 		initializeVisibilitiesAndAllowedVisibilities();
 		initializeAccessAndAllowedAccesses();
 
+		if (isEditableAllowed(PersonDto.BIRTH_DATE_MM)) {
+			birthDateMonth.addItems(DateHelper.getMonthsInYear());
+			birthDateMonth.setPageLength(13);
+			DateHelper.getMonthsInYear()
+				.forEach(month -> birthDateMonth.setItemCaption(month, de.symeda.sormas.api.Month.values()[month - 1].toString()));
+		}
+
 		if (!getField(PersonDto.OCCUPATION_TYPE).isVisible()
 			&& !getField(PersonDto.ARMED_FORCES_RELATION_TYPE).isVisible()
 			&& !getField(PersonDto.EDUCATION_TYPE).isVisible())