Humidity and mold problems that delayed the opening of the new Apple Store in Hannover, Germany, have reportedly been resolved, and the store is now expected to open in September, reports ifun, citing several sources involved in the project.

The store had originally seemed close to completion in March, but humidity in the building reportedly led to mold in the fabric of the building, requiring remedial work.

The site ifun reported that employees who had already been hired based on the previous anticipated opening have been informed of the latest developments, and is speculating that Apple may time the opening to coincide with the launch of the iPhone 6, rumored to be on 19th September.

Following with the appointment of retail head Angela Ahrendts, Apple announced an ambitious international expansion program for its retail stores, with around 20 expected to open this year. International stores already opened this year include the first ever Apple Stores in Brazil and Turkey, the fourth store in Switzerland and the eighth store in Japan.

Earlier this month, Apple was granted a European trademark on the design of its retail stores.