diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index eab07503b..07b7038aa 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -28,6 +28,7 @@
 #include "rsn_supp/pmksa_cache.h"
 #include "l2_packet/l2_packet.h"
 #include "wps/wps.h"
+#include "fst/fst.h"
 #include "fst/fst_ctrl_iface.h"
 #include "config.h"
 #include "wpa_supplicant_i.h"