diff --git a/inc/catc.php b/inc/catc.php
index 4b977e6..4e5986a 100644
--- a/inc/catc.php
+++ b/inc/catc.php
@@ -88,7 +88,8 @@ class CATC extends Main
 					'context'	=> $this->asContext,
 					'cookie'	=> Auth::USER_COOKIE_PASS,
 					'workshops'	=> (new Course($this->oDb))->getWorkshops(),
-					'courses'	=> (new Course($this->oDb))->getCourses()
+					'courses'	=> (new Course($this->oDb))->getCourses(),
+					'server'	=> Settings::SERVER_URL
 				),
 				'vars'		=> $this->getVars()
 			),
diff --git a/masks/template.html b/masks/template.html
index ace6f14..c98684d 100644
--- a/masks/template.html
+++ b/masks/template.html
@@ -14,7 +14,7 @@
 				</div>
 			</div>
 			<a tabindex="0" class="body btn btn-outline-primary ml-2 my-0" role="button" data-toggle="popover"><i class="fa-body"></i></a>
-			<button class="sync btn btn-outline-primary ml-2 my-0" type="button" data-toggle="tooltip" title="Sync local server with lutran.ch"><i class="fa-sync"></i></button>
+			<button class="sync btn btn-outline-primary ml-2 my-0" type="button" data-toggle="tooltip"><i class="fa-sync"></i></button>
 			<button class="home btn btn-outline-primary ml-2 my-0" type="button"><i class="fa-home"></i></button>
 			<button class="logoff btn btn-outline-primary ml-2 my-0" type="button" data-toggle="modal" data-target="#log-off"><i class="fa-logoff"></i></button>
 		</form>
diff --git a/scripts/catc.js b/scripts/catc.js
index 5b87f77..c4d5346 100644
--- a/scripts/catc.js
+++ b/scripts/catc.js
@@ -193,15 +193,22 @@ function CATC(asGlobals)
 		});
 		
 		//Sync
-		self.elem.$Menu.find('.sync').click(function(){
-			Tools.ajax(
-				'server_push',
-				()=>{self.feedback('success', 'Successful Sync');},
-				{},
-				(sDesc)=>{self.feedback('error', sDesc);},
-				$(this).find('i')
-			);
-		});
+		var $Sync = self.elem.$Menu.find('.sync');
+		if(self.consts.server!='') {
+			$Sync
+				.attr('title', 'Sync local server with '+getHostname(self.consts.server))
+				.tooltip()
+				.click(function(){
+					Tools.ajax(
+						'server_push',
+						()=>{self.feedback('success', 'Successful Sync');},
+						{},
+						(sDesc)=>{self.feedback('error', sDesc);},
+						$(this).find('i')
+					);
+			});
+		}
+		else $Sync.hide();
 		
 		//Home
 		self.elem.$Menu.find('.home').click(function(){self.setHash(self.consts.default_page);});
diff --git a/scripts/common.js b/scripts/common.js
index de567bc..bf55843 100644
--- a/scripts/common.js
+++ b/scripts/common.js
@@ -285,6 +285,22 @@ function getLoginToken(sPass)
 	return md5(sPass+window.location.origin+window.location.pathname);
 }
 
+function getHostname(url) {
+	var hostname;
+
+	//find & remove protocol (http, ftp, etc.) and get hostname
+	if(url.indexOf("//") > -1) hostname = url.split('/')[2];
+	else hostname = url.split('/')[0];
+
+	//find & remove port number
+	hostname = hostname.split(':')[0];
+
+	//find & remove "?"
+	hostname = hostname.split('?')[0];
+
+	return hostname;
+}
+
 var defaultDiacriticsRemovalap = [
 	{'base':'A', 'letters':'\u0041\u24B6\uFF21\u00C0\u00C1\u00C2\u1EA6\u1EA4\u1EAA\u1EA8\u00C3\u0100\u0102\u1EB0\u1EAE\u1EB4\u1EB2\u0226\u01E0\u00C4\u01DE\u1EA2\u00C5\u01FA\u01CD\u0200\u0202\u1EA0\u1EAC\u1EB6\u1E00\u0104\u023A\u2C6F'},
 	{'base':'AA','letters':'\uA732'},