diff --git a/lib/libc/include/libc_private.h b/lib/libc/include/libc_private.h
index 0f170dbb9b6d..8dca7a0daece 100644
--- a/lib/libc/include/libc_private.h
+++ b/lib/libc/include/libc_private.h
@@ -135,4 +135,9 @@ extern const char *__progname;
  */
 extern struct _spinlock *__malloc_lock;
 
+/*
+ * Function to clean up streams, called from abort() and exit().
+ */
+extern void (*__cleanup)(void);
+
 #endif /* _LIBC_PRIVATE_H_ */
diff --git a/lib/libc/stdio/local.h b/lib/libc/stdio/local.h
index 16a9e78db6ff..74c3238357ac 100644
--- a/lib/libc/stdio/local.h
+++ b/lib/libc/stdio/local.h
@@ -65,7 +65,6 @@ extern fpos_t	__sseek(void *, fpos_t, int);
 extern int	__sclose(void *);
 extern void	__sinit(void);
 extern void	_cleanup(void);
-extern void	(*__cleanup)(void);
 extern void	__smakebuf(FILE *);
 extern int	__swhatbuf(FILE *, size_t *, int *);
 extern int	_fwalk(int (*)(FILE *));
diff --git a/lib/libc/stdio/makebuf.c b/lib/libc/stdio/makebuf.c
index bc8a468f2580..bdade6754cfa 100644
--- a/lib/libc/stdio/makebuf.c
+++ b/lib/libc/stdio/makebuf.c
@@ -46,9 +46,11 @@ __FBSDID("$FreeBSD$");
 #include <unistd.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include "local.h"
 #include "un-namespace.h"
 
+#include "libc_private.h"
+#include "local.h"
+
 /*
  * Allocate a file buffer, or switch to unbuffered I/O.
  * Per the ANSI C standard, ALL tty devices default to line buffered.
diff --git a/lib/libc/stdlib/abort.c b/lib/libc/stdlib/abort.c
index 36cd15ba62bb..468a9bf40d87 100644
--- a/lib/libc/stdlib/abort.c
+++ b/lib/libc/stdlib/abort.c
@@ -45,7 +45,7 @@ __FBSDID("$FreeBSD$");
 #include <pthread.h>
 #include "un-namespace.h"
 
-void (*__cleanup)();
+#include "libc_private.h"
 
 void
 abort()
diff --git a/lib/libc/stdlib/exit.c b/lib/libc/stdlib/exit.c
index 83abdbd5d506..cafb127eeea9 100644
--- a/lib/libc/stdlib/exit.c
+++ b/lib/libc/stdlib/exit.c
@@ -41,9 +41,11 @@ __FBSDID("$FreeBSD$");
 #include <stdlib.h>
 #include <unistd.h>
 #include "un-namespace.h"
-#include "atexit.h"
 
-void (*__cleanup)();
+#include "atexit.h"
+#include "libc_private.h"
+
+void (*__cleanup)(void);
 
 /*
  * This variable is zero until a process has created a thread.