Index: trunk/psphot/src/models/pmModel_STRAIL.c
===================================================================
--- trunk/psphot/src/models/pmModel_STRAIL.c	(revision 35559)
+++ trunk/psphot/src/models/pmModel_STRAIL.c	(revision 35769)
@@ -563,5 +563,6 @@
     // convert to shape terms (SXX,SYY,SXY)
     // XXX user-defined value for limit?
-    if (!pmPSF_FitToModel (PAR, 0.1)) {
+    bool useReff = pmModelUseReff (model->type);
+    if (!pmPSF_FitToModel (PAR, 0.1, useReff)) {
         psError(PM_ERR_PSF, false, "Failed to fit object at (r,c) = (%.1f,%.1f)", Xo, Yo);
         return false;