diff --git a/lib/ace/keyboard/vim/commands.js b/lib/ace/keyboard/vim/commands.js
index bc698e46..b3c12049 100644
--- a/lib/ace/keyboard/vim/commands.js
+++ b/lib/ace/keyboard/vim/commands.js
@@ -211,13 +211,13 @@ var actions = exports.actions = {
             if (defaultReg.isLine) {
                 var pos = editor.getCursorPosition();
                 pos.column = editor.session.getLine(pos.row).length;
-                var text = lang.stringRepeat("\n" + defaultReg.text, count);
+                var text = lang.stringRepeat("\n" + defaultReg.text, count || 1);
                 editor.session.insert(pos, text);
                 editor.moveCursorTo(pos.row + 1, 0);
             }
             else {
                 editor.navigateRight();
-                editor.insert(lang.stringRepeat(defaultReg.text, count));
+                editor.insert(lang.stringRepeat(defaultReg.text, count || 1));
                 editor.navigateLeft();
             }
             editor.setOverwrite(true);
@@ -232,12 +232,12 @@ var actions = exports.actions = {
             if (defaultReg.isLine) {
                 var pos = editor.getCursorPosition();
                 pos.column = 0;
-                var text = lang.stringRepeat(defaultReg.text + "\n", count);
+                var text = lang.stringRepeat(defaultReg.text + "\n", count || 1);
                 editor.session.insert(pos, text);
                 editor.moveCursorToPosition(pos);
             }
             else {
-                editor.insert(lang.stringRepeat(defaultReg.text, count));
+                editor.insert(lang.stringRepeat(defaultReg.text, count || 1));
             }
             editor.setOverwrite(true);
             editor.selection.clearSelection();