Providing　secure　communication　in　different　environments　is　very　vital　in　an　adhoc　network.　One　of　the　important　security　threats　in　wireless　adhoc　networks　are　routing　attacks.　These　attacks　are　used　to　disconnect　a　sensor　network　from　its　central　base　station.　Ad　hoc　on-demand　distance　vector　(AODV)　is　a　dynamic　routing　protocol　that　is　not　designed　to　consider　security　as　a　goal.　In　this　research,　a　novel　solution　AODV　Malicious　node　Detection　and　Removal　(AODV-MDR)　has　been　proposed.　During　route　discovery　of　AODV-MDR,　every　intermediate　node　who　claims　that　it　has　a　fresh　path　to　destination,　must　send　Gratuitous　Route　Reply　to　the　destination　and　destination　sends　acknowledgement　back　to　the　source　through　the　same　intermediate　node.　Based　on　the　received　acknowledgement,　source　node　confirms　the　authenticity　of　claimed　path　and　also　applies　hop　count　verification.　Results　revealed　that　the　proposed　scheme　detect　malicious　node　with　great　accuracy.　Moreover,　AODV-MDR　works　without　any　overhead　of　encryption　and　hashing.　©　2017　Association　for　Computing　Machinery.