Index: trunk/ippTools/src/chiptool.c
===================================================================
--- trunk/ippTools/src/chiptool.c	(revision 32575)
+++ trunk/ippTools/src/chiptool.c	(revision 32577)
@@ -1002,4 +1002,5 @@
     PXOPT_COPY_STR(config->args, where, "-class_id", "chipProcessedImfile.class_id", "==");
     PXOPT_LOOKUP_S64(chip_id, config->args, "-chip_id", true, false);
+    PXOPT_LOOKUP_S64(class_id, config->args, "-class_id", true, false);
     PXOPT_LOOKUP_S16(quality, config->args, "-set_quality", true, false);
 
@@ -1010,5 +1011,6 @@
 
     if (psListLength(where->list) == 0) {
-        psError(PXTOOLS_ERR_CONFIG, true, "-chip_id is required");
+        // won't get here
+        psError(PXTOOLS_ERR_CONFIG, true, "-chip_id and -class_id are required");
         return false;
     }
Index: trunk/ippTools/src/chiptoolConfig.c
===================================================================
--- trunk/ippTools/src/chiptoolConfig.c	(revision 32575)
+++ trunk/ippTools/src/chiptoolConfig.c	(revision 32577)
@@ -241,5 +241,5 @@
     psMetadata *dropprocessedimfileArgs = psMetadataAlloc();
     psMetadataAddS64(dropprocessedimfileArgs, PS_LIST_TAIL, "-chip_id",  0,            "search by chip ID (required)", 0);
-    psMetadataAddStr(dropprocessedimfileArgs,  PS_LIST_TAIL, "-class_id",           0, "search by class ID", NULL);
+    psMetadataAddStr(dropprocessedimfileArgs,  PS_LIST_TAIL, "-class_id",           0, "search by class ID (required)", NULL);
     psMetadataAddS16(dropprocessedimfileArgs, PS_LIST_TAIL, "-set_quality",  0,        "set quality (required)", 0);