--- a/include/libssh/libssh.h
+++ b/include/libssh/libssh.h
@@ -57,6 +57,7 @@
typedef unsigned long long uint64_t;
typedef int mode_t;
#else /* _MSC_VER */
+ #include <sys/types.h>
#include <unistd.h>
#include <inttypes.h>
#endif /* _MSC_VER */