diff --git a/client/cmdhfepa.c b/client/cmdhfepa.c
index 62680eff5..c6db746c6 100644
--- a/client/cmdhfepa.c
+++ b/client/cmdhfepa.c
@@ -15,6 +15,7 @@
 #include "cmdparser.h"
 #include "common.h"
 #include "cmdmain.h"
+#include "sleep.h"
 
 #include "cmdhfepa.h"