diff --git a/js/plugins/tern.js b/js/plugins/tern.js
index bde8e88e..124e25df 100644
--- a/js/plugins/tern.js
+++ b/js/plugins/tern.js
@@ -32,7 +32,7 @@
       if (err) throw new Error("Request for ecma5.json failed: " + err);
       espruinoJSON = code;
       server = new CodeMirror.TernServer({defs: [JSON.parse(espruinoJSON)]});
-      
+
       Espruino.Core.EditorJavaScript.getEditors().forEach(applyToEditor);
     });
 
@@ -94,6 +94,12 @@
                 };
             }
           });
+          if ("LCD" in data.devices)
+            defs["g"] = {
+                "!type": "+Graphics",
+                "!doc": "Graphics instance for on-device LCD",
+                "!url": "https://www.espruino.com/Reference#Graphics"
+              };
         }
 
         // reload tern server with new defs
diff --git a/manifest.json b/manifest.json
index 7adf4fcd..01b4047f 100644
--- a/manifest.json
+++ b/manifest.json
@@ -2,7 +2,7 @@
   "name": "Espruino Web IDE",
   "short_name": "Espruino IDE",
   "description": "A Terminal and Graphical code Editor for Espruino JavaScript Microcontrollers",
-  "version": "0.78.15",
+  "version": "0.78.16",
   "app": {
     "background": {
       "scripts": ["js/background.js"]
diff --git a/package.json b/package.json
index 0e447715..6d2f535a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "espruino-web-ide",
-  "version": "0.78.15",
+  "version": "0.78.16",
   "description": "A Terminal and Graphical code Editor for Espruino JavaScript Microcontrollers",
   "//1": "-------------------------------------------------------- nw.js",
   "main": "main.html",
diff --git a/serviceworker.js b/serviceworker.js
index 0011b503..e96467af 100644
--- a/serviceworker.js
+++ b/serviceworker.js
@@ -1,5 +1,5 @@
 // Service worker for Offline Web IDE
-const VERSION = 'v120';
+const VERSION = 'v121';
 
 const CACHED_RESOURCES = [
   'blockly/blockly_espruino.js',