diff --git a/include/twin.h b/include/twin.h
index 1c584d9..ea7e4a9 100644
--- a/include/twin.h
+++ b/include/twin.h
@@ -1005,16 +1005,12 @@ void twin_path_curve(twin_path_t *path,
  * timeout.c
  */
 
-#define twin_time_compare(a, op, b) (((a) - (b)) op 0)
-
 twin_timeout_t *twin_set_timeout(twin_timeout_proc_t timeout_proc,
                                  twin_time_t delay,
                                  void *closure);
 
 void twin_clear_timeout(twin_timeout_t *timeout);
 
-twin_time_t twin_now(void);
-
 /*
  * toplevel.c
  */
diff --git a/src/timeout.c b/src/timeout.c
index 0629f9e..04dfb9b 100644
--- a/src/timeout.c
+++ b/src/timeout.c
@@ -5,9 +5,20 @@
  */
 
 #include <stdlib.h>
+#include <sys/time.h>
+#include <time.h>
 
 #include "twin_private.h"
 
+#define twin_time_compare(a, op, b) (((a) - (b)) op 0)
+
+static twin_time_t twin_now(void)
+{
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+
 static twin_queue_t *head;
 static twin_time_t start;
 
@@ -82,13 +93,3 @@ twin_time_t _twin_timeout_delay(void)
     }
     return -1;
 }
-
-#include <sys/time.h>
-#include <time.h>
-
-twin_time_t twin_now(void)
-{
-    struct timeval tv;
-    gettimeofday(&tv, NULL);
-    return tv.tv_sec * 1000 + tv.tv_usec / 1000;
-}