diff --git a/include/fluent-bit/flb_config.h b/include/fluent-bit/flb_config.h
index d926c493ee9..ec1957f3977 100644
--- a/include/fluent-bit/flb_config.h
+++ b/include/fluent-bit/flb_config.h
@@ -94,6 +94,9 @@ struct flb_config {
     /* Parsers instances */
     struct mk_list parsers;
 
+    /* Multiline instances */
+    struct mk_list multilines;
+
     /* Outputs instances */
     struct mk_list outputs;             /* list of output plugins   */
 
diff --git a/src/flb_config.c b/src/flb_config.c
index acaa939a79d..2cafc3143f7 100644
--- a/src/flb_config.c
+++ b/src/flb_config.c
@@ -198,6 +198,7 @@ struct flb_config *flb_config_init()
     mk_list_init(&config->out_plugins);
     mk_list_init(&config->inputs);
     mk_list_init(&config->parsers);
+    mk_list_init(&config->multilines);
     mk_list_init(&config->filters);
     mk_list_init(&config->outputs);
     mk_list_init(&config->proxies);