Index: trunk/ppImage/src/ppImageArguments.c
===================================================================
--- trunk/ppImage/src/ppImageArguments.c	(revision 43038)
+++ trunk/ppImage/src/ppImageArguments.c	(revision 43049)
@@ -119,5 +119,5 @@
     pmConfigFileSetsMD (config->arguments, &argc, argv, "LINEARITY", "-linearity", "-linearlist");
     pmConfigFileSetsMD (config->arguments, &argc, argv, "NEWNONLIN", "-newnonlin", "-newnonlinlist");
-    pmConfigFileSetsMD (config->arguments, &argc, argv, "VALID.OVERSCAN", "-valid-overscan", "-valid-overscan-list");
+    pmConfigFileSetsMD (config->arguments, &argc, argv, "VALID_OVERSCAN", "-valid-overscan", "-valid-overscan-list");
     pmConfigFileSetsMD (config->arguments, &argc, argv, "PATTERN.ROW.AMP", "-pattern-row-amplitude", "-not-defined");
     pmConfigFileSetsMD (config->arguments, &argc, argv, "PATTERN.DEAD.CELLS", "-pattern-dead-cells", "-not-defined");
Index: trunk/ppImage/src/ppImageParseCamera.c
===================================================================
--- trunk/ppImage/src/ppImageParseCamera.c	(revision 43038)
+++ trunk/ppImage/src/ppImageParseCamera.c	(revision 43049)
@@ -124,7 +124,7 @@
     if (options->doMaskBadOverscan) {
 	// if the file has been specified on the command-line (-valid-overscan file), then the file
-	// is identified by the VALID.OVERSCAN entry in config->arguments.  otherwise, load from the
-	// detrend system as type VALID.OVERSCAN
-	if (!ppImageDefineFile(config, input->fpa, "PPIMAGE.VALID.OVERSCAN", "VALID.OVERSCAN",
+	// is identified by the VALID_OVERSCAN entry in config->arguments.  otherwise, load from the
+	// detrend system as type VALID_OVERSCAN
+	if (!ppImageDefineFile(config, input->fpa, "PPIMAGE.VALID.OVERSCAN", "VALID_OVERSCAN",
 			       PM_FPA_FILE_VALID_OVERSCAN, PM_DETREND_TYPE_VALID_OVERSCAN)) {
 	    psError(PS_ERR_IO, false, "Can't find a new non-linearity correction source");