Index: trunk/psModules/src/imcombine/pmSubtractionAnalysis.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtractionAnalysis.c	(revision 29594)
+++ trunk/psModules/src/imcombine/pmSubtractionAnalysis.c	(revision 29595)
@@ -105,15 +105,5 @@
         int fullSize = 2 * size + 1;    // Full size of kernel
 
-	/* in the CENTRAL_DELTA case, the final convolution kernel replaces the central delta
-	   function which was subtracted to force zero flux for each kernel.  for other cases,
-	   we have to include the zero order component of the normalization here.
-	 */
-
-	//# if (CENTRAL_DELTA)
-# if (1)
         float norm = 0.0;               // Normalisation (kernel sum)
-# else
-        float norm = 1.0;               // Normalisation (kernel sum)
-# endif
         for (int y = 0; y < fullSize; y++) {
             for (int x = 0; x < fullSize; x++) {