diff --git a/b2/boom.c b/b2/boom.c
index c5aa1e4..41e695e 100644
--- a/b2/boom.c
+++ b/b2/boom.c
@@ -87,6 +87,9 @@ static void dump(const char *s)
 {
 	while (*s) {
 		switch (*s) {
+		case 'c':
+			parts_dump(stderr);
+			break;
 		case 'h':
 			dump_hierarchy(hierarchy);
 			break;
diff --git a/b2/lang.y b/b2/lang.y
index 7c9f193..c92e880 100644
--- a/b2/lang.y
+++ b/b2/lang.y
@@ -418,7 +418,6 @@ characteristics:
 	| part characteristics
 		{
 			part_finalize($1, &hierarchy);
-			part_dump(stderr, $1);
 		}
 	;