diff --git a/iguana/exchanges/stats.c b/iguana/exchanges/stats.c
index 8d03d26c6..c9d21deb3 100644
--- a/iguana/exchanges/stats.c
+++ b/iguana/exchanges/stats.c
@@ -29,6 +29,7 @@
 #define STATS_DEST "/var/www/html/DEXstats.json"
 #include "DEXstats.h"
 char *stats_JSON(void *ctx,char *myipaddr,int32_t mypubsock,cJSON *argjson,char *remoteaddr,uint16_t port);
+extern uint32_t DOCKERFLAG;
 
 char *stats_validmethods[] =
 {