--- branches/development/src/nonbonded/MAW.cpp	2011/04/20 20:14:11	1548
+++ branches/development/src/nonbonded/MAW.cpp	2011/04/27 18:38:15	1549
@@ -219,7 +219,7 @@ namespace OpenMD {
       RealType Vang = ca1 * x2 / idat.r2 + cb1 * z / idat.rij + (0.8 - ca1 / 3.0);
          
       RealType pot_temp = idat.vdwMult * Vmorse * Vang;
-      idat.vpair[0] += pot_temp;
+      idat.vpair += pot_temp;
       idat.pot[0] += idat.sw * pot_temp;
            
       Vector3d dVmorsedr = (myDeriv - myDerivC) * Vector3d(x, y, z) / idat.rij;