diff --git a/src/MANYBODY/pair_adp.cpp b/src/MANYBODY/pair_adp.cpp
index c9b290a0a6..203bf0d1ce 100644
--- a/src/MANYBODY/pair_adp.cpp
+++ b/src/MANYBODY/pair_adp.cpp
@@ -193,6 +193,7 @@ void PairADP::compute(int eflag, int vflag)
 
     for (jj = 0; jj < jnum; jj++) {
       j = jlist[jj];
+      j &= NEIGHMASK;
 
       delx = xtmp - x[j][0];
       dely = ytmp - x[j][1];
@@ -293,6 +294,7 @@ void PairADP::compute(int eflag, int vflag)
 
     for (jj = 0; jj < jnum; jj++) {
       j = jlist[jj];
+      j &= NEIGHMASK;
 
       delx = xtmp - x[j][0];
       dely = ytmp - x[j][1];