Index: trunk/ppStack/src/ppStackMatch.c
===================================================================
--- trunk/ppStack/src/ppStackMatch.c	(revision 30620)
+++ trunk/ppStack/src/ppStackMatch.c	(revision 30685)
@@ -312,5 +312,5 @@
             } else {
 		// we need to register the FWHM values for use downstream 
-		pmSubtractionSetFWHMs(options->inputSeeing->data.F32[index], options->targetSeeing);
+		pmSubtractionSetFWHMs(options->targetSeeing, options->inputSeeing->data.F32[index]);
 
                 // Scale the input parameters