Index: trunk/psModules/src/camera/pmHDUGenerate.c
===================================================================
--- trunk/psModules/src/camera/pmHDUGenerate.c	(revision 7382)
+++ trunk/psModules/src/camera/pmHDUGenerate.c	(revision 7431)
@@ -77,5 +77,5 @@
             psRegion *biassec = NULL;   // The bias section
             while ((biassec = psListGetAndIncrement(biassecsIter))) {
-                if (!psRegionIsNaN(*trimsec)) {
+                if (!psRegionIsNaN(*biassec)) {
                     *xSize = PS_MAX(biassec->x1, *xSize);
                     *ySize = PS_MAX(biassec->y1, *ySize);