diff --git a/wise-webapp/src/main/java/com/wisemapping/dao/LabelManager.java b/wise-webapp/src/main/java/com/wisemapping/dao/LabelManager.java
index 778175ea..c649a483 100644
--- a/wise-webapp/src/main/java/com/wisemapping/dao/LabelManager.java
+++ b/wise-webapp/src/main/java/com/wisemapping/dao/LabelManager.java
@@ -14,4 +14,6 @@ public interface LabelManager {
 
     @NotNull
     List<Label> getAllLabels(@NotNull final User user);
+    @Nullable
+    Label getLabelByTitle(@NotNull final String title, @NotNull final User user);
 }
diff --git a/wise-webapp/src/main/java/com/wisemapping/dao/LabelManagerImpl.java b/wise-webapp/src/main/java/com/wisemapping/dao/LabelManagerImpl.java
index 74416585..4ab997c8 100644
--- a/wise-webapp/src/main/java/com/wisemapping/dao/LabelManagerImpl.java
+++ b/wise-webapp/src/main/java/com/wisemapping/dao/LabelManagerImpl.java
@@ -25,4 +25,14 @@ public class LabelManagerImpl extends HibernateDaoSupport
     public List<Label> getAllLabels(@NotNull final User user) {
         return getHibernateTemplate().find("from com.wisemapping.model.Label wisemapping where creator_id=?", user.getId());
     }
+    @Nullable
+    @Override
+    public Label getLabelByTitle(@NotNull String title, @NotNull final User user) {
+        Label result = null;
+        final List<Label> labels = getHibernateTemplate().find("from com.wisemapping.model.Label wisemapping where title=? and creator=?", new Object[]{title, user});
+        if (labels != null && !labels.isEmpty()) {
+            result = labels.get(0);
+        }
+        return result;
+    }
 }
diff --git a/wise-webapp/src/main/java/com/wisemapping/model/Constants.java b/wise-webapp/src/main/java/com/wisemapping/model/Constants.java
index c8d306ce..60723ac0 100755
--- a/wise-webapp/src/main/java/com/wisemapping/model/Constants.java
+++ b/wise-webapp/src/main/java/com/wisemapping/model/Constants.java
@@ -21,6 +21,7 @@ package com.wisemapping.model;
 public class Constants {
 
     public  static final int MAX_MAP_NAME_LENGTH = 512;
+    public  static final int MAX_LABEL_NAME_LENGTH = 30;
     public static final int MAX_MAP_DESCRIPTION_LENGTH = 512;
     public static final int MAX_USER_LASTNAME_LENGTH = 255;
     public static final int MAX_USER_FIRSTNAME_LENGTH = 255;
diff --git a/wise-webapp/src/main/java/com/wisemapping/service/LabelService.java b/wise-webapp/src/main/java/com/wisemapping/service/LabelService.java
index efeedb7a..914f8a85 100644
--- a/wise-webapp/src/main/java/com/wisemapping/service/LabelService.java
+++ b/wise-webapp/src/main/java/com/wisemapping/service/LabelService.java
@@ -12,4 +12,5 @@ public interface LabelService {
     void addLabel(@NotNull final Label label, @NotNull final User user) throws WiseMappingException;
 
     @NotNull List<Label> getAll(@NotNull final User user);
+    public Label getLabelByTitle(@NotNull String title, @NotNull final User user);
 }
diff --git a/wise-webapp/src/main/java/com/wisemapping/service/LabelServiceImpl.java b/wise-webapp/src/main/java/com/wisemapping/service/LabelServiceImpl.java
index 6370c3fa..6218da86 100644
--- a/wise-webapp/src/main/java/com/wisemapping/service/LabelServiceImpl.java
+++ b/wise-webapp/src/main/java/com/wisemapping/service/LabelServiceImpl.java
@@ -29,4 +29,9 @@ public class LabelServiceImpl implements LabelService {
         return labelManager.getAllLabels(user);
     }
 
+    @Nullable
+    @Override
+    public Label getLabelByTitle(@NotNull String title, @NotNull final User user) {
+        return labelManager.getLabelByTitle(title, user);
+    }
 }
diff --git a/wise-webapp/src/main/java/com/wisemapping/validator/LabelValidator.java b/wise-webapp/src/main/java/com/wisemapping/validator/LabelValidator.java
index ed920fcb..be5a8b4d 100644
--- a/wise-webapp/src/main/java/com/wisemapping/validator/LabelValidator.java
+++ b/wise-webapp/src/main/java/com/wisemapping/validator/LabelValidator.java
@@ -1,6 +1,9 @@
 package com.wisemapping.validator;
 
+import com.wisemapping.model.Constants;
 import com.wisemapping.model.Label;
+import com.wisemapping.model.User;
+import com.wisemapping.service.LabelService;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.springframework.validation.Errors;
@@ -8,6 +11,13 @@ import org.springframework.validation.ValidationUtils;
 import org.springframework.validation.Validator;
 
 public class LabelValidator implements Validator {
+
+    private final LabelService service;
+
+    public LabelValidator(@NotNull final LabelService service) {
+        this.service = service;
+    }
+
     @Override
     public boolean supports(Class<?> clazz) {
         return clazz.equals(Label.class);
@@ -26,7 +36,18 @@ public class LabelValidator implements Validator {
 
     private void validateLabel(@NotNull final Label label, @NotNull final Errors errors) {
         ValidationUtils.rejectIfEmptyOrWhitespace(errors, "title", Messages.FIELD_REQUIRED);
-        String title = label.getTitle();
-        //todo hacer otras validaciones como si supera el maximo o el label existe
+        final String title = label.getTitle();
+        ValidatorUtils.rejectIfExceeded(
+                errors,
+                "title",
+                "The description must have less than " + Constants.MAX_LABEL_NAME_LENGTH + " characters.",
+                title,
+                Constants.MAX_LABEL_NAME_LENGTH);
+        final User user = com.wisemapping.security.Utils.getUser();
+        assert user != null;
+        final Label foundLabel = service.getLabelByTitle(title, user);
+        if (foundLabel != null) {
+            errors.rejectValue("title", Messages.LABEL_TITLE_ALREADY_EXISTS);
+        }
     }
 }
diff --git a/wise-webapp/src/main/java/com/wisemapping/validator/Messages.java b/wise-webapp/src/main/java/com/wisemapping/validator/Messages.java
index fd1c5dd2..4dd0cba0 100644
--- a/wise-webapp/src/main/java/com/wisemapping/validator/Messages.java
+++ b/wise-webapp/src/main/java/com/wisemapping/validator/Messages.java
@@ -24,6 +24,7 @@ public interface Messages {
     String FIELD_REQUIRED = "FIELD_REQUIRED";
     String IMPORT_MAP_ERROR = "IMPORT_MAP_ERROR";
     String MAP_TITLE_ALREADY_EXISTS = "MAP_TITLE_ALREADY_EXISTS";
+    String LABEL_TITLE_ALREADY_EXISTS = "LABEL_TITLE_ALREADY_EXISTS";
     String PASSWORD_MISSMATCH = "PASSWORD_MISSMATCH";
     String CAPTCHA_ERROR = "CAPTCHA_ERROR";
     String CAPTCHA_LOADING_ERROR = "CAPTCHA_LOADING_ERROR";
diff --git a/wise-webapp/src/main/resources/messages_en.properties b/wise-webapp/src/main/resources/messages_en.properties
index b9536da5..4ce7cda4 100644
--- a/wise-webapp/src/main/resources/messages_en.properties
+++ b/wise-webapp/src/main/resources/messages_en.properties
@@ -105,6 +105,7 @@ IMPORT_MINDMAP_INFO=You can import FreeMind 0.9 and WiseMapping maps to your lis
 PRINT=Print
 IMPORT_MAP_ERROR=FreeMind file could not be imported. {0}
 MAP_TITLE_ALREADY_EXISTS=You have already a map with the same name
+LABEL_TITLE_ALREADY_EXISTS=You have already a label with the same name
 #####FOOTER
 COPYRIGHT=Powered by WiseMapping
 TERMS_AND_CONDITIONS=Terms and Conditions