Index: /trunk/psphot/src/psphotReadout.c
===================================================================
--- /trunk/psphot/src/psphotReadout.c	(revision 13352)
+++ /trunk/psphot/src/psphotReadout.c	(revision 13353)
@@ -65,5 +65,5 @@
     if (useFootprints) {
        psArray *footprints = psphotFindPeaks (readout, recipe, useFootprints, 1);
-       int growRadius = psMetadataLookupS32(None, recipe, "FOOTPRINT_GROW_RADIUS");
+       int growRadius = psMetadataLookupS32(NULL, recipe, "FOOTPRINT_GROW_RADIUS");
        if (growRadius > 0) {
 	   psArray *tmp = pmGrowFootprintArray(footprints, growRadius);
@@ -177,5 +177,5 @@
        psArray *newFootprints = psphotFindPeaks (readout, recipe, useFootprints, 2);
 
-       int growRadius = psMetadataLookupS32(None, recipe, "FOOTPRINT_GROW_RADIUS_2");
+       int growRadius = psMetadataLookupS32(NULL, recipe, "FOOTPRINT_GROW_RADIUS_2");
        if (growRadius > 0) {
 	   psArray *tmp = pmGrowFootprintArray(newFootprints, growRadius);