11. Other Current Assets

Other current assets as of December 31, 2014 and 2013 consist of the following:

December 31, 2014 December 31, 2013
Prepaid custom duties 18,178 22,530
Advances paid 39,782 31,618
Prepaid expenses 594 311
Value added tax receivable 42,281 35,223
Other assets 32,043 21,661
Less impairment provision (16,951) (10,461)
Total other current assets 115,927 100,882

The impairment provision mainly relates to other assets represented by other receivables of Group’s Serbian subsidiary.