diff --git a/Fonderie/interpolator.c b/Fonderie/interpolator.c
index eb2eef2..00b960b 100644
--- a/Fonderie/interpolator.c
+++ b/Fonderie/interpolator.c
@@ -301,6 +301,13 @@ if (foo) {
 	exit(1);
 	}
 
+if (verbosity) {
+	fprintf(stderr, "\tinput glob        '%s'\n", argv[optind]);
+	fprintf(stderr, "\toutput dir        '%s'\n", argv[optind+1]);
+	fprintf(stderr, "\tsrc filter        '%s'\n", InFchain);
+	fprintf(stderr, "\tout filter        '%s'\n", OutFchain);
+	}
+
 if (verbosity > 1) {
 	puts("=========================");
 	filterstack_list(0, __FILE__);