diff --git a/src/haproxy.c b/src/haproxy.c
index 4b45cbe..4b3393a 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -1620,7 +1620,12 @@
 		progname = tmp + 1;
 
 	/* the process name is used for the logs only */
-	chunk_initstr(&global.log_tag, strdup(progname));
+	chunk_initlen(&global.log_tag, strdup(progname), strlen(progname), strlen(progname));
+	if (b_orig(&global.log_tag) == NULL) {
+		chunk_destroy(&global.log_tag);
+		ha_alert("Cannot allocate memory for log_tag.\n");
+		exit(EXIT_FAILURE);
+	}
 
 	argc--; argv++;
 	while (argc > 0) {