diff --git a/fslcreatehd.cc b/fslcreatehd.cc
index 332ad6f7828b6f2afc3c886201387fc23ffde33a..9e4f5e0088c479ec3a04a5aca7db5675cc3c2d2c 100755
--- a/fslcreatehd.cc
+++ b/fslcreatehd.cc
@@ -61,7 +61,7 @@ int fslcreatehd_main(int argc, char *argv[])
       header.sX[0]=-header.pixdim[1];
       header.sY[1]=header.pixdim[2];
       header.sZ[2]=header.pixdim[3];
-      header.sX[3]=header.pixdim[1]*(header.dim[1]-1.0-atoi(argv[9]));
+      header.sX[3]-=header.pixdim[1]*atoi(argv[9]);
       header.sY[3]=-header.pixdim[2]*atoi(argv[10]);
       header.sZ[3]=-header.pixdim[3]*atoi(argv[11]);
       header.qformCode=2;