Index: trunk/ppImage/src/ppImageDetrendFlat.c
===================================================================
--- trunk/ppImage/src/ppImageDetrendFlat.c	(revision 5857)
+++ trunk/ppImage/src/ppImageDetrendFlat.c	(revision 5858)
@@ -1,7 +1,12 @@
 # include "ppImage.h"
 
-bool ppDetrendFlat () {
+// why does this use the flat pmReadout?
+
+bool ppDetrendFlat (pmReadout *inputReadout, pmReadout *flat, ppOptions *options) {
 
     psLogMsg("phase2", PS_LOG_INFO, "Performing flat field.\n");
+
+    
+
 #ifndef PRODUCTION
     psImage *dummyImage = psImageAlloc(inputReadout->image->numCols,