Index: trunk/ppSim/src/ppSimInsertGalaxies.c
===================================================================
--- trunk/ppSim/src/ppSimInsertGalaxies.c	(revision 36868)
+++ trunk/ppSim/src/ppSimInsertGalaxies.c	(revision 38041)
@@ -82,5 +82,5 @@
 
     pmPSF *psf = psMetadataLookupPtr (&mdok, chip->analysis, "PSPHOT.PSF");
-    assert (psf);
+    psAssert (psf, "missing PSPHOT.PSF on chip.analysis");
 
     int dX = PM_CELL_TO_CHIP (0.0, x0Cell, xParityCell, binning);