Index: trunk/psastro/src/psastroOneChip.c
===================================================================
--- trunk/psastro/src/psastroOneChip.c	(revision 15201)
+++ trunk/psastro/src/psastroOneChip.c	(revision 15258)
@@ -108,6 +108,6 @@
 	    for (int j = 0; j <= chip->toFPA->x->nY; j++) {
 		if (i + j > order) {
-		    chip->toFPA->x->mask[i][j] = 1;
-		    chip->toFPA->y->mask[i][j] = 1;
+		    chip->toFPA->x->coeffMask[i][j] = PS_POLY_MASK_SET;
+		    chip->toFPA->y->coeffMask[i][j] = PS_POLY_MASK_SET;
 		}
 	    }