Index: trunk/psphot/src/psphotMaskBackground.c
===================================================================
--- trunk/psphot/src/psphotMaskBackground.c	(revision 31154)
+++ trunk/psphot/src/psphotMaskBackground.c	(revision 34528)
@@ -17,8 +17,8 @@
 
     // find the currently selected readout (XXX note that the model is saved on PSPHOT.BACKMDL regardless of 'filename'
-    pmFPAfile *modelFile = pmFPAfileSelectSingle(config->files, "PSPHOT.BACKMDL", index); // File of interest
+    pmFPAfile *modelFile = pmFPAfileSelectSingle(config->files, psphotGetFilerule("PSPHOT.BACKMDL"), index); // File of interest
     assert (modelFile);
 
-    pmFPAfile *stdevFile = pmFPAfileSelectSingle(config->files, "PSPHOT.BACKMDL.STDEV", index);
+    pmFPAfile *stdevFile = pmFPAfileSelectSingle(config->files, psphotGetFilerule("PSPHOT.BACKMDL.STDEV"), index);
     assert (stdevFile);