diff --git a/core/debug.cc b/core/debug.cc
index 747f66bfa3c2d15de50d8666d7090ee502ae7b12..797ea3bb96e7c0a081f1c6b013ebcd21e629cd09 100644
--- a/core/debug.cc
+++ b/core/debug.cc
@@ -13,7 +13,7 @@
 #include "drivers/console.hh"
 #include <osv/sched.hh>
 #include <osv/debug.hh>
-#include "osv/debug.h"
+#include <osv/debug.h>
 
 using namespace std;
 
diff --git a/drivers/ramdisk.c b/drivers/ramdisk.c
index 10b23b90e55e9529aea3c556ad1066ccc9149161..3346a661ac36dc0a9c74d50f31abc1ebd3e8f8db 100644
--- a/drivers/ramdisk.c
+++ b/drivers/ramdisk.c
@@ -42,7 +42,7 @@
 
 #include <osv/device.h>
 #include <osv/bio.h>
-#include "debug.h"
+#include <osv/debug.h>
 
 struct ramdisk_softc {
 	char		*addr;		/* base address of image */
diff --git a/include/debug.h b/include/debug.h
deleted file mode 100644
index 8aeec56a2e86fbbb4d19c155ad81af3dcb3f4a1f..0000000000000000000000000000000000000000
--- a/include/debug.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (C) 2013 Cloudius Systems, Ltd.
- *
- * This work is open source software, licensed under the terms of the
- * BSD license as described in the LICENSE file in the top-level directory.
- */
-
-#ifndef DEBUGC_H
-#define DEBUGC_H
-
-void debug(const char *msg);
-void debugf(const char *, ...);
-
-#endif // DEBUGC_H
diff --git a/include/osv/debug.h b/include/osv/debug.h
index 6e4fe7df74e8169cc838b2d04d0f5dc8fe4c1710..df30fe4bb988a01aaf93863cb197d09653559e63 100644
--- a/include/osv/debug.h
+++ b/include/osv/debug.h
@@ -33,6 +33,7 @@ typedef enum logger_severity_e {
 
 __BEGIN_DECLS
 void debug(const char *msg);
+void debugf(const char *, ...);
 void debug_write(const char *msg, size_t len);
 
 /* a lockless version that doesn't take any locks before printing,
diff --git a/libc/exit/assert.c b/libc/exit/assert.c
index c076a269c493f1a821e883dec0aec3f789a68b53..aef9d98217fdd7b56d5d6a84145df8ee02f826fc 100644
--- a/libc/exit/assert.c
+++ b/libc/exit/assert.c
@@ -1,5 +1,5 @@
 #include <stdlib.h>
-#include "osv/debug.h"
+#include <osv/debug.h>
 
 void __assert_fail(const char *expr, const char *file, int line, const char *func)
 {