The invention relates to a panel (1) with connecting means (3, 4, 7, 9) which make a positive connection with a further panel (2) possible. A panel (1) comprises as connecting means laterally a groove (3) formed by two rigid flanks. One of the two rigid flanks (6) is longer than the other one. The longer rigid flank (6) comprises a recess (7). The other panel comprises laterally a tongue (4). The tongue (4) comprises on an under- or top side a lug (9). The lug (9) and the recess (7) are so arranged that the lug (9) is able to engage with the recess (7).