Index: trunk/psphot/src/psphotMergeSources.c
===================================================================
--- trunk/psphot/src/psphotMergeSources.c	(revision 11230)
+++ trunk/psphot/src/psphotMergeSources.c	(revision 11263)
@@ -16,5 +16,5 @@
 
     // find the currently selected readout
-    pmReadout  *readout = pmFPAfileThisReadout (config->files, view, "INPUT.SRC");
+    pmReadout  *readout = pmFPAfileThisReadout (config->files, view, "PSPHOT.SRC");
     if (!readout) {
 	psLogMsg ("psphot", 3, "no external sources supplied");