diff --git a/src/or/config.c b/src/or/config.c
index bac2b2e642..babbfb0a9c 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -14,6 +14,8 @@
 #include "or.h"
 #include "circuitbuild.h"
 #include "circuitlist.h"
+#include "circuitmux.h"
+#include "circuitmux_ewma.h"
 #include "config.h"
 #include "connection.h"
 #include "connection_edge.h"