Same-store sales growth at

Wal-Mart's

(WMT) - Get Report

main discount store division fell short of the company's 4% to 6% planned range last week, though sales are still on track to meet expectations for the month, the company said Monday in its weekly recorded call.

Same-store sales at

Sam's Club

, Wal-Mart's warehouse club business, were on plan during the week. Same-store sales measure sales at outlets open at least a year.

The company said that while the average sales ticket at Wal-Mart remained "strong," the customer count was "essentially flat." Still, because of the last two weeks of strong sales, Wal-Mart remains on track to post monthly same-store sales that are within the company's expectations of 4% to 6% growth. Same-store sales rose 4.8% during September.

Wal-Mart shares fell 75 cents, or 2%, to $45.81 in early trading.