Index: trunk/ppMerge/src/ppMergeOptions.c
===================================================================
--- trunk/ppMerge/src/ppMergeOptions.c	(revision 10441)
+++ trunk/ppMerge/src/ppMergeOptions.c	(revision 10743)
@@ -180,4 +180,18 @@
             options->shutter = false;
             options->mask = false;
+        } else if (strcasecmp(type, "SKYFLAT") == 0) {
+            options->zero = false;
+            options->scale = true;
+            options->darktime = false;
+            options->fringe = false;
+            options->shutter = false;
+            options->mask = false;
+        } else if (strcasecmp(type, "DOMEFLAT") == 0) {
+            options->zero = false;
+            options->scale = true;
+            options->darktime = false;
+            options->fringe = false;
+            options->shutter = false;
+            options->mask = false;
         } else if (strcasecmp(type, "FRINGE") == 0) {
             options->zero = true;