1 files changed, 6 insertions, 2 deletions

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index e71a0a11afde..9bdfdf2d3fbe 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -96,7 +96,10 @@ static void print_boot_time(__u64 nsecs, char *buf, unsigned int size)
                 return;
         }
 
-        strftime(buf, size, "%b %d/%H:%M", &load_tm);
+        if (json_output)
+                strftime(buf, size, "%s", &load_tm);
+        else
+                strftime(buf, size, "%FT%T%z", &load_tm);
 }
 
 static int prog_fd_by_tag(unsigned char *tag)
@@ -245,7 +248,8 @@ static void print_prog_json(struct bpf_prog_info *info, int fd)
                 print_boot_time(info->load_time, buf, sizeof(buf));
 
                 /* Piggy back on load_time, since 0 uid is a valid one */
-                jsonw_string_field(json_wtr, "loaded_at", buf);
+                jsonw_name(json_wtr, "loaded_at");
+                jsonw_printf(json_wtr, "%s", buf);
                 jsonw_uint_field(json_wtr, "uid", info->created_by_uid);
         }