1 files changed, 3 insertions, 0 deletions
diff --git a/builtin/prune.c b/builtin/prune.c
index 0c73246..6a58e75 100644
--- a/builtin/prune.c
+++ b/builtin/prune.c
@@ -218,6 +218,9 @@ int cmd_prune(int argc, const char **argv, const char *prefix)
 		return 0;
 	}
 
+	if (repository_format_precious_objects)
+		die(_("cannot prune in a precious-objects repo"));
+
 	while (argc--) {
 		unsigned char sha1[20];
 		const char *name = *argv++;