diff --git a/designated_fsm.h b/designated_fsm.h
index b1c0eae..8ffa1a3 100644
--- a/designated_fsm.h
+++ b/designated_fsm.h
@@ -19,6 +19,9 @@
  */
 #ifndef HAVE_DESIGNATED_FSM_H
 #define HAVE_DESIGNATED_FSM_H
+
+#include "fsm.h"
+
 /**
  * Run the state machine for a clock which is designated as master port.
  * @param state  The current state of the port.
diff --git a/servo_private.h b/servo_private.h
index b8c3c98..1c5cfdf 100644
--- a/servo_private.h
+++ b/servo_private.h
@@ -19,7 +19,10 @@
 #ifndef HAVE_SERVO_PRIVATE_H
 #define HAVE_SERVO_PRIVATE_H
 
+#include <stdint.h>
+
 #include "contain.h"
+#include "servo.h"
 
 struct servo {
 	double max_frequency;