diff --git a/lib/ace/keyboard/vim/commands.js b/lib/ace/keyboard/vim/commands.js
index b3c12049..795eafc8 100644
--- a/lib/ace/keyboard/vim/commands.js
+++ b/lib/ace/keyboard/vim/commands.js
@@ -83,6 +83,18 @@ var actions = exports.actions = {
                 case "b":
                     editor.renderer.alignCursor(null, 1);
                     break;
+                case "c":
+                    coreCommands.fold();
+                    break;
+                case "o":
+                    coreCommands.unfold();
+                    break;
+                case "C":
+                    coreCommands.foldall();
+                    break;
+                case "O":
+                    coreCommands.unfoldall();
+                    break;
             }
         }
     },