diff --git a/Backend/services/core/src/main/java/org/edu_sharing/restservices/PersonDao.java b/Backend/services/core/src/main/java/org/edu_sharing/restservices/PersonDao.java
index a02a69ea8..c1be04a4d 100644
--- a/Backend/services/core/src/main/java/org/edu_sharing/restservices/PersonDao.java
+++ b/Backend/services/core/src/main/java/org/edu_sharing/restservices/PersonDao.java
@@ -217,7 +217,7 @@ private static HashMap<String, Serializable> profileToMap(UserProfileEdit profil
 		newUserInfo.put(CCConstants.PROP_USER_LASTNAME, profile.getLastName());
 		newUserInfo.put(CCConstants.PROP_USER_EMAIL, profile.getEmail());
         newUserInfo.put(CCConstants.CM_PROP_PERSON_ABOUT, profile.getAbout());
-        newUserInfo.put(CCConstants.CM_PROP_PERSON_SKILLS, profile.getSkills());
+        newUserInfo.put(CCConstants.CM_PROP_PERSON_SKILLS, new ArrayList(Arrays.asList(profile.getSkills())));
         newUserInfo.put(CCConstants.CM_PROP_PERSON_VCARD, profile.getVCard());
 		if(AuthorityServiceFactory.getLocalService().isGlobalAdmin()) {
 			newUserInfo.put(CCConstants.CM_PROP_PERSON_EDU_SCHOOL_PRIMARY_AFFILIATION, profile.getPrimaryAffiliation());
@@ -573,7 +573,11 @@ public String getPrimaryAffiliation() {
 	}
 
 	public String[] getSkills() {
-		return (String[])this.userInfo.get(CCConstants.CM_PROP_PERSON_SKILLS);
+		List<String> skills = (List<String>)this.userInfo.get(CCConstants.CM_PROP_PERSON_SKILLS);
+		if(skills != null){
+			return skills.toArray(new String[0]);
+		}
+		return null;
 	}
 	public String getHomeFolder() {
 		if(this.homeFolderId == null) {
diff --git a/Backend/services/core/src/main/java/org/edu_sharing/restservices/shared/UserProfile.java b/Backend/services/core/src/main/java/org/edu_sharing/restservices/shared/UserProfile.java
index 9b2402bb2..1fabbae66 100644
--- a/Backend/services/core/src/main/java/org/edu_sharing/restservices/shared/UserProfile.java
+++ b/Backend/services/core/src/main/java/org/edu_sharing/restservices/shared/UserProfile.java
@@ -94,7 +94,9 @@ public String getAbout() {
 	public void setAbout(String about) {
 		this.about = about;
 	}
-	@JsonProperty
+
+    @JsonProperty
+    @Schema(description = "",nullable = true)
 	public String[] getSkills() {
 		return skills;
 	}
diff --git a/Backend/services/rest/api/src/main/resources/openapi.json b/Backend/services/rest/api/src/main/resources/openapi.json
index 997d5d68f..77a443c86 100644
--- a/Backend/services/rest/api/src/main/resources/openapi.json
+++ b/Backend/services/rest/api/src/main/resources/openapi.json
@@ -6067,8 +6067,10 @@
           },
           "skills": {
             "items": {
+              "nullable": true,
               "type": "string"
             },
+            "nullable": true,
             "type": "array"
           },
           "type": {
@@ -6121,8 +6123,10 @@
           },
           "skills": {
             "items": {
+              "nullable": true,
               "type": "string"
             },
+            "nullable": true,
             "type": "array"
           },
           "type": {
@@ -6170,8 +6174,10 @@
           },
           "skills": {
             "items": {
+              "nullable": true,
               "type": "string"
             },
+            "nullable": true,
             "type": "array"
           },
           "type": {