diff --git a/src/http_htx.c b/src/http_htx.c
index e97141c..bb9474c 100644
--- a/src/http_htx.c
+++ b/src/http_htx.c
@@ -1565,6 +1565,7 @@
 			fd = -1;
 			obj[objlen] = '\0';
 			reply->type = HTTP_REPLY_LOGFMT;
+			LIST_INIT(&reply->body.fmt);
 			cur_arg++;
 		}
 		else if (strcmp(args[cur_arg], "lf-string") == 0) {
@@ -1581,6 +1582,7 @@
 			obj = strdup(args[cur_arg]);
 			objlen = strlen(args[cur_arg]);
 			reply->type = HTTP_REPLY_LOGFMT;
+			LIST_INIT(&reply->body.fmt);
 			cur_arg++;
 		}
 		else if (strcmp(args[cur_arg], "hdr") == 0) {