diff --git a/src/mworker.c b/src/mworker.c
index 4d5e544bb..9a0292326 100644
--- a/src/mworker.c
+++ b/src/mworker.c
@@ -125,7 +125,7 @@ void mworker_proc_list_to_env()
 			type = 'w';
 
 		if (child->pid > -1)
-			memprintf(&msg, "%s|type=%c;fd=%d;cfd=%d;pid=%d;reloads=%d;failedreloads=%d;timestamp=%d;id=%s;version=%s", msg ? msg : "", type, child->ipc_fd[0], child->ipc_fd[1], child->pid, child->reloads, child->failedreloads, child->timestamp, child->id ? child->id : "", child->version);
+			memprintf(&msg, "%s|type=%c;fd=%d;cfd=%d;pid=%d;reloads=%d;failedreloads=%d;timestamp=%d;id=%s;version=%s", msg ? msg : "", type, child->ipc_fd[0], child->ipc_fd[1], child->pid, child->reloads, child->failedreloads, child->timestamp, child->id ? child->id : "", child->version ? child->version : "");
 	}
 	if (msg)
 		setenv("HAPROXY_PROCESSES", msg, 1);