diff --git a/server/modules/routing/avrorouter/avro_rbr.c b/server/modules/routing/avrorouter/avro_rbr.c
index 01f52050d..8631eaa33 100644
--- a/server/modules/routing/avrorouter/avro_rbr.c
+++ b/server/modules/routing/avrorouter/avro_rbr.c
@@ -17,6 +17,7 @@
 #include <jansson.h>
 #include <maxscale/alloc.h>
 #include <strings.h>
+#include <maxscale/utils.h>
 
 #define WRITE_EVENT         0
 #define UPDATE_EVENT        1