1 files changed, 5 insertions, 3 deletions

diff --git a/ui-snapshot.c b/ui-snapshot.c
index 6f09151..f98f5d7 100644
--- a/ui-snapshot.c
+++ b/ui-snapshot.c
@@ -162,31 +162,33 @@ void cgit_print_snapshot(const char *head, const char *hex,
         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) {
-                        prefix = xstrdup(filename);
-                        prefix[strlen(filename) - strlen(f->suffix)] = '\0';
+                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);
 }