diff --git a/assets/js/common/utils.js b/assets/js/common/utils.js
index 9e761e06..16e43227 100644
--- a/assets/js/common/utils.js
+++ b/assets/js/common/utils.js
@@ -255,4 +255,21 @@ function createFormGroup(infos){
 
 	//Return input
 	return input;
+}
+
+/**
+ * Check if a string is valid and ready to be sent to be saved
+ * 
+ * @param {String} value The input string to send
+ * @return {Boolean} True if the string is valid, false else
+ */
+function checkString(value){
+	
+	//First, check string length
+	if(value.length < 5)
+		return false; //Lenght invalid
+
+	//Success, the string seems to be valid
+	return true;
+
 }
\ No newline at end of file
diff --git a/assets/js/components/conversations/chatWindows.js b/assets/js/components/conversations/chatWindows.js
index 89dc9a98..dc9364da 100644
--- a/assets/js/components/conversations/chatWindows.js
+++ b/assets/js/components/conversations/chatWindows.js
@@ -561,13 +561,14 @@ ComunicWeb.components.conversations.chatWindows = {
 	 * @return {Boolean} True for a success
 	 */
 	submitMessageForm: function(convInfos){
-
+		
 		//Log action
 		ComunicWeb.debug.logMessage("Send a new message in a conversation system.");
 		console.log(convInfos);
 
 		//Check if message is empty
-		//if(convInfos.sendMessageForm.inputText)
+		if(!checkString(convInfos.box.sendMessageForm.inputText.value))
+			ComunicWeb.common.notificationSystem.showNotification("Please type a valid message before trying to send it !", "danger", 2);
 
 		//Success
 		return true;