diff --git a/public/javascripts/context_menu.js b/public/javascripts/context_menu.js
index 89676316c..fdf73e244 100644
--- a/public/javascripts/context_menu.js
+++ b/public/javascripts/context_menu.js
@@ -15,8 +15,11 @@ const contextMenu = (function() {
         else if (clipboardMode === 'copy') {
             treeChanges.cloneNoteAfter(clipboardId, node.data.note_tree_id);
         }
+        else if (clipboardId === null) {
+            // just do nothing
+        }
         else {
-            throw new Error("Unrecognized clipboard mode=" + mode);
+            throw new Error("Unrecognized clipboard mode=" + clipboardMode);
         }
 
         clipboardId = null;
@@ -127,6 +130,7 @@ const contextMenu = (function() {
         pasteAfter,
         pasteInto,
         cut,
+        copy,
         contextMenuSettings
     }
 })();
\ No newline at end of file
diff --git a/public/javascripts/note_editor.js b/public/javascripts/note_editor.js
index 53593f90e..fd801e1c8 100644
--- a/public/javascripts/note_editor.js
+++ b/public/javascripts/note_editor.js
@@ -171,9 +171,7 @@ const noteEditor = (function() {
     }
 
     $(document).ready(() => {
-        noteTitleEl.on('input', () => {
-            noteChanged();
-        });
+        noteTitleEl.on('input', noteChanged);
 
         noteDetailEl.summernote({
             airMode: true,
diff --git a/public/javascripts/note_tree.js b/public/javascripts/note_tree.js
index f1dd5ebdd..818837700 100644
--- a/public/javascripts/note_tree.js
+++ b/public/javascripts/note_tree.js
@@ -435,23 +435,19 @@ const noteTree = (function() {
                         return false;
 
                     // Handle Ctrl-C, -X and -V
-                    // case 67:
-                    //     if (event.ctrlKey) { // Ctrl-C
-                    //         copyPaste("copy", node);
-                    //         return false;
-                    //     }
-                    //     break;
+                    case 67:
+                        if (event.ctrlKey) { // Ctrl-C
+                            contextMenu.copy(node);
+                            return false;
+                        }
+                        break;
                     case 86:
-                        console.log("CTRL-V");
-
                         if (event.ctrlKey) { // Ctrl-V
                             contextMenu.pasteAfter(node);
                             return false;
                         }
                         break;
                     case 88:
-                        console.log("CTRL-X");
-
                         if (event.ctrlKey) { // Ctrl-X
                             contextMenu.cut(node);
                             return false;