1 files changed, 4 insertions, 2 deletions

diff --git a/ui-snapshot.c b/ui-snapshot.c
index 5f813fc..f25613e 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -154,39 +154,41 @@ static const char *get_ref_from_filename(const char *url, const char *filename,
 		return snapshot;
 
 	return NULL;
 }
 
 void cgit_print_snapshot(const char *head, const char *hex,
 			 const char *filename, int snapshots, int dwim)
 {
 	const struct cgit_snapshot_format* f;
 	char *prefix = NULL;
 
 	f = get_format(filename);
 	if (!f) {
 		ctx.page.mimetype = "text/html";
 		cgit_print_http_headers(&ctx);
 		cgit_print_docstart(&ctx);
 		cgit_print_pageheader(&ctx);
 		cgit_print_error(fmt("Unsupported snapshot format: %s", filename));
 		cgit_print_docend();
 		return;
 	}
 
 	if (!hex && dwim) {
 		hex = get_ref_from_filename(ctx.repo->url, filename, f);
-		if (hex != NULL) {
+		if (hex == NULL) {
+			html_status(404, "Not found", 0);
+			return;
+		}
 			prefix = xstrdup(filename);
 			prefix[strlen(filename) - strlen(f->suffix)] = '\0';
 		}
-	}
 
 	if (!hex)
 		hex = head;
 
 	if (!prefix)
 		prefix = xstrdup(cgit_repobasename(ctx.repo->url));
 
 	make_snapshot(f, hex, prefix, filename);
 	free(prefix);
 }