diff --git a/libmpcodecs/ae.c b/libmpcodecs/ae.c
index 8749d5e633..dd8984f765 100644
--- a/libmpcodecs/ae.c
+++ b/libmpcodecs/ae.c
@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <inttypes.h>
 #include <unistd.h>
+#include <sys/types.h>
 #include <math.h>
 #include "aviheader.h"
 #include "ms_hdr.h"
diff --git a/libmpcodecs/ae_lame.c b/libmpcodecs/ae_lame.c
index 186544eee0..73ab91c69c 100644
--- a/libmpcodecs/ae_lame.c
+++ b/libmpcodecs/ae_lame.c
@@ -3,6 +3,7 @@
 #include <inttypes.h>
 #include <unistd.h>
 #include <string.h>
+#include <sys/types.h>
 #include "m_option.h"
 #include "../mp_msg.h"
 #include "aviheader.h"
diff --git a/libmpcodecs/ae_lavc.c b/libmpcodecs/ae_lavc.c
index 52df828422..1d03bec916 100644
--- a/libmpcodecs/ae_lavc.c
+++ b/libmpcodecs/ae_lavc.c
@@ -3,6 +3,7 @@
 #include <inttypes.h>
 #include <unistd.h>
 #include <string.h>
+#include <sys/types.h>
 #include "m_option.h"
 #include "../mp_msg.h"
 #include "aviheader.h"
diff --git a/libmpcodecs/ae_pcm.c b/libmpcodecs/ae_pcm.c
index 147619060a..1e78bbfb09 100644
--- a/libmpcodecs/ae_pcm.c
+++ b/libmpcodecs/ae_pcm.c
@@ -3,6 +3,7 @@
 #include <inttypes.h>
 #include <unistd.h>
 #include <string.h>
+#include <sys/types.h>
 #include "m_option.h"
 #include "../mp_msg.h"
 #include "aviheader.h"
diff --git a/libmpcodecs/ae_toolame.c b/libmpcodecs/ae_toolame.c
index cfcb533e50..eed5c53066 100644
--- a/libmpcodecs/ae_toolame.c
+++ b/libmpcodecs/ae_toolame.c
@@ -3,6 +3,7 @@
 #include <inttypes.h>
 #include <unistd.h>
 #include <string.h>
+#include <sys/types.h>
 #include "m_option.h"
 #include "../mp_msg.h"
 #include "aviheader.h"