diff --git a/src/fuzz/fuzz-journald-kmsg.c b/src/fuzz/fuzz-journald-kmsg.c
index 5d99d24..e2611c6 100644
--- a/src/fuzz/fuzz-journald-kmsg.c
+++ b/src/fuzz/fuzz-journald-kmsg.c
@@ -11,6 +11,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
                 return 0;
 
         s = (Server) {
+                .syslog_fd = -1,
                 .native_fd = -1,
                 .stdout_fd = -1,
                 .dev_kmsg_fd = -1,