Index: trunk/psphot/src/models/pmModel_STRAIL.c
===================================================================
--- trunk/psphot/src/models/pmModel_STRAIL.c	(revision 14655)
+++ trunk/psphot/src/models/pmModel_STRAIL.c	(revision 15000)
@@ -530,6 +530,6 @@
  
     for (int i = 4; i < 7; i++) { 
-      psPolynomial2D *poly = psf->params->data[i-4]; 
-	out[i] = psPolynomial2DEval (poly, out[2], out[3]); 
+      pmTrend2D *trend = psf->params->data[i-4]; 
+	out[i] = pmTrend2DEval (trend, out[2], out[3]); 
     } 
     return(true); 
@@ -554,7 +554,6 @@
     for (int i = 0; i < psf->params->n; i++) {
 	if (i == PM_PAR_SKY) continue;
-	psPolynomial2D *poly = psf->params->data[i];
-	assert (poly);
-	PAR[i] = psPolynomial2DEval(poly, Xo, Yo);
+	pmTrend2D *trend = psf->params->data[i];
+	PAR[i] = pmTrend2DEval(trend, Xo, Yo);
     }