Index: trunk/ppSub/src/ppSubArguments.c
===================================================================
--- trunk/ppSub/src/ppSubArguments.c	(revision 20568)
+++ trunk/ppSub/src/ppSubArguments.c	(revision 21183)
@@ -216,6 +216,6 @@
     psMetadataAddF32(arguments, PS_LIST_TAIL, "-rej", 0, "Rejection thresold (sigma)", NAN);
     psMetadataAddF32(arguments, PS_LIST_TAIL, "-sys", 0, "Relative systematic error in kernel", NAN);
-    psMetadataAddU8(arguments,  PS_LIST_TAIL, "-mask-bad", 0, "Mask value for bad pixels", 0);
-    psMetadataAddU8(arguments,  PS_LIST_TAIL, "-mask-poor", 0, "Mask value for poor pixels", 0);
+    psMetadataAddImageMask(arguments,  PS_LIST_TAIL, "-mask-bad", 0, "Mask value for bad pixels", 0);
+    psMetadataAddImageMask(arguments,  PS_LIST_TAIL, "-mask-poor", 0, "Mask value for poor pixels", 0);
     psMetadataAddF32(arguments,  PS_LIST_TAIL, "-poor-frac", 0, "Fraction of weight for poor pixels", NAN);
     psMetadataAddF32(arguments, PS_LIST_TAIL, "-badfrac", 0, "Maximum fraction of bad pixels to accept", 1.0);