Index: trunk/ppSub/src/ppSubSetMasks.c
===================================================================
--- trunk/ppSub/src/ppSubSetMasks.c	(revision 23505)
+++ trunk/ppSub/src/ppSubSetMasks.c	(revision 23535)
@@ -43,6 +43,10 @@
     psAssert(satValue, "SAT must be non-zero");
 
-    psImageMaskType badValue = pmConfigMaskGet("BAD", config);
-    psAssert(badValue, "BAD must be non-zero");
+    psImageMaskType lowValue = pmConfigMaskGet("LOW", config);
+    if (!lowValue) {
+        // Look up old name for backward compatability
+        lowValue = pmConfigMaskGet("BAD", config);
+    }
+    psAssert(lowValue, "LOW or BAD must be non-zero");
 
     // input images
@@ -58,5 +62,5 @@
     if (!inRO->mask) {
         if (psMetadataLookupBool(NULL, recipe, "MASK.GENERATE")) {
-            pmReadoutSetMask(inRO, satValue, badValue);
+            pmReadoutSetMask(inRO, satValue, lowValue);
         } else {
             inRO->mask = psImageAlloc(numCols, numRows, PS_TYPE_IMAGE_MASK);
@@ -66,5 +70,5 @@
     if (!refRO->mask) {
         if (psMetadataLookupBool(NULL, recipe, "MASK.GENERATE")) {
-            pmReadoutSetMask(refRO, satValue, badValue);
+            pmReadoutSetMask(refRO, satValue, lowValue);
         } else {
             refRO->mask = psImageAlloc(numCols, numRows, PS_TYPE_IMAGE_MASK);