Index: trunk/ppSub/src/ppSubLoop.c
===================================================================
--- trunk/ppSub/src/ppSubLoop.c	(revision 14259)
+++ trunk/ppSub/src/ppSubLoop.c	(revision 14296)
@@ -14,6 +14,7 @@
 {
     // Value to mask
-    psMaskType maskBlank = pmConfigMask(psMetadataLookupStr(NULL, config->arguments, "MASK.BLANK"),
-                                        config); // Mask for blank reg.
+    psMaskType maskBlank = pmConfigMask(psMetadataLookupStr(NULL, config->arguments, "MASK.BLANK"), config) |
+        pmConfigMask(psMetadataLookupStr(NULL, config->arguments, "MASK.BAD"),
+                     config); // Mask for subtracted image
 
     bool mdok;                          // Status of MD lookup