Index: trunk/ppMerge/src/ppMergeScaleZero.c
===================================================================
--- trunk/ppMerge/src/ppMergeScaleZero.c	(revision 23259)
+++ trunk/ppMerge/src/ppMergeScaleZero.c	(revision 23463)
@@ -35,4 +35,5 @@
       case PPMERGE_TYPE_BIAS:
       case PPMERGE_TYPE_DARK:
+      case PPMERGE_TYPE_CTEMASK:
         // Nothing to measure
         return true;