diff --git a/osdep/subprocess-posix.c b/osdep/subprocess-posix.c
index 8dcc5f6304..82af7c5f50 100644
--- a/osdep/subprocess-posix.c
+++ b/osdep/subprocess-posix.c
@@ -15,8 +15,6 @@
  * with mpv.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "osdep/subprocess.h"
-
 #include <spawn.h>
 #include <poll.h>
 #include <unistd.h>
@@ -25,8 +23,11 @@
 #include <errno.h>
 #include <signal.h>
 
+#include "osdep/subprocess.h"
+
 #include "osdep/io.h"
 #include "common/common.h"
+#include "stream/stream.h"
 
 // Normally, this must be declared manually, but glibc is retarded.
 #ifndef __GLIBC__
diff --git a/osdep/subprocess-win.c b/osdep/subprocess-win.c
index 04ea4ec3e4..0f6c20126a 100644
--- a/osdep/subprocess-win.c
+++ b/osdep/subprocess-win.c
@@ -16,16 +16,17 @@
  */
 
 #define _WIN32_WINNT 0x0600
-#include "osdep/subprocess.h"
-
 #include <windows.h>
 #include <string.h>
 
+#include "osdep/subprocess.h"
+
 #include "osdep/io.h"
 #include "osdep/atomics.h"
 
 #include "talloc.h"
 #include "common/common.h"
+#include "stream/stream.h"
 #include "misc/bstr.h"
 
 static void write_arg(bstr *cmdline, char *arg)
diff --git a/osdep/subprocess.h b/osdep/subprocess.h
index 1ab4ddbdd7..09c07da981 100644
--- a/osdep/subprocess.h
+++ b/osdep/subprocess.h
@@ -18,7 +18,9 @@
 #ifndef MP_SUBPROCESS_H_
 #define MP_SUBPROCESS_H_
 
-#include "stream/stream.h"
+#include <stddef.h>
+
+struct mp_cancel;
 
 typedef void (*subprocess_read_cb)(void *ctx, char *data, size_t size);