diff --git a/handlers/members.go b/handlers/members.go
index 5f25e54..cccdafa 100644
--- a/handlers/members.go
+++ b/handlers/members.go
@@ -296,9 +296,16 @@ func (dh *DatabaseHandler) memberExists(checkMember models.Member) (bool, error)
 		return false, errors.New("database not opened")
 	}
 
-	var member models.Member
-	if !dh.database.Exists(&member, "birthdayHash", dh.hashField(checkMember.Birthday), false) {
+	var members []models.Member
+	if !dh.database.Exists(&members, "birthdayHash", dh.hashField(checkMember.Birthday), false) {
 		return false, nil
 	}
-	return dh.hashField(checkMember.FirstName) == member.FirstNameHash && dh.hashField(checkMember.LastName) == member.LastNameHash && dh.hashField(checkMember.Birthday) == member.BirthdayHash, nil
+
+	for _, member := range members {
+		if dh.hashField(checkMember.FirstName) == member.FirstNameHash && dh.hashField(checkMember.LastName) == member.LastNameHash && dh.hashField(checkMember.Birthday) == member.BirthdayHash {
+			return true, nil
+		}
+	}
+
+	return false, nil
 }
diff --git a/handlers/responsible.go b/handlers/responsible.go
index e4aa08f..ca2e364 100644
--- a/handlers/responsible.go
+++ b/handlers/responsible.go
@@ -54,9 +54,15 @@ func (dh *DatabaseHandler) responsibleExists(CheckResponsible models.Person) (bo
 		return false, errors.New("database not opened")
 	}
 
-	var person models.Person
-	if !dh.database.Exists(&person, "lastName", CheckResponsible.LastName, false) {
+	var persons []models.Person
+	if !dh.database.Exists(&persons, "lastName", CheckResponsible.LastName, false) {
 		return false, nil
 	}
-	return person.FirstName == CheckResponsible.FirstName && person.LastName == CheckResponsible.LastName, nil
+
+	for _, person := range persons {
+		if person.FirstName == CheckResponsible.FirstName && person.LastName == CheckResponsible.LastName {
+			return true, nil
+		}
+	}
+	return false, nil
 }