Index: trunk/psphot/src/psphotImageBackground.c
===================================================================
--- trunk/psphot/src/psphotImageBackground.c	(revision 6319)
+++ trunk/psphot/src/psphotImageBackground.c	(revision 6441)
@@ -40,5 +40,5 @@
     x->n = y->n = z->n = Nout;
 
-    psPolynomial2D *skyModel = psPolynomial2DAlloc(1, 1, PS_POLYNOMIAL_ORD);
+    psPolynomial2D *skyModel = psPolynomial2DAlloc(PS_POLYNOMIAL_ORD, 1, 1);
     skyModel->mask[1][1] = 1;