diff --git a/src/fix_ave_atom.cpp b/src/fix_ave_atom.cpp
index 9d3e8e556a..4d9e39581d 100644
--- a/src/fix_ave_atom.cpp
+++ b/src/fix_ave_atom.cpp
@@ -26,7 +26,7 @@
 
 using namespace LAMMPS_NS;
 
-enum{X,XU,V,F,COMPUTE,FIX,VARIABLE};
+enum{X,V,F,COMPUTE,FIX,VARIABLE};
 
 #define INVOKED_PERATOM 8
 
@@ -65,16 +65,6 @@ FixAveAtom::FixAveAtom(LAMMPS *lmp, int narg, char **arg) :
       which[nvalues] = X;
       argindex[nvalues++] = 2;
 
-    } else if (strcmp(arg[iarg],"xu") == 0) {
-      which[nvalues] = XU;
-      argindex[nvalues++] = 0;
-    } else if (strcmp(arg[iarg],"yu") == 0) {
-      which[nvalues] = XU;
-      argindex[nvalues++] = 1;
-    } else if (strcmp(arg[iarg],"zu") == 0) {
-      which[nvalues] = XU;
-      argindex[nvalues++] = 2;
-
     } else if (strcmp(arg[iarg],"vx") == 0) {
       which[nvalues] = V;
       argindex[nvalues++] = 0;
@@ -315,26 +305,6 @@ void FixAveAtom::end_of_step()
       for (i = 0; i < nlocal; i++)
 	if (mask[i] & groupbit) array[i][m] += x[i][j];
 
-    } else if (which[m] == XU) {
-      double **x = atom->x;
-      int *image = atom->image;
-      if (j == 0) {
-	double xprd = domain->xprd;
-	for (i = 0; i < nlocal; i++)
-	  if (mask[i] & groupbit) 
-	    array[i][m] += x[i][0] + ((image[i] & 1023) - 512) * xprd;
-      } else if (j == 1) {
-	double yprd = domain->yprd;
-	for (i = 0; i < nlocal; i++)
-	  if (mask[i] & groupbit) 
-	    array[i][m] += x[i][1] + ((image[i] >> 10 & 1023) - 512) * yprd;
-      } else {
-	double zprd = domain->zprd;
-	for (i = 0; i < nlocal; i++)
-	  if (mask[i] & groupbit) 
-	    array[i][m] += x[i][2] + ((image[i] >> 20) - 512) * zprd;
-      }
-
     } else if (which[m] == V) {
       double **v = atom->v;
       for (i = 0; i < nlocal; i++)