diff --git a/thirdparty/lzo/driver/lzocompress.c b/thirdparty/lzo/driver/lzocompress.c
index aaac821..de3fb6d 100644
--- a/thirdparty/lzo/driver/lzocompress.c
+++ b/thirdparty/lzo/driver/lzocompress.c
@@ -15,6 +15,10 @@
 
 
 #include <stdio.h>
+#include <stdlib.h>
+#if defined(_WIN32)
+#include <io.h>
+#endif
 
 int main(int argc, char *argv[])
 {
diff --git a/thirdparty/lzo/driver/lzodecompress.c b/thirdparty/lzo/driver/lzodecompress.c
index 1176a05..1b419f9 100644
--- a/thirdparty/lzo/driver/lzodecompress.c
+++ b/thirdparty/lzo/driver/lzodecompress.c
@@ -17,6 +17,10 @@
 
 #include <stdio.h>
 #include <fcntl.h>
+#include <stdlib.h>
+#if defined(_WIN32)
+#include <io.h>
+#endif
 
 int main(int argc, char *argv[])
 {