diff --git a/third_party/sqlite-objstore/src/backend_fs_common.c b/third_party/sqlite-objstore/src/backend_fs_common.c
index 06eb0c75..8eab28d0 100644
--- a/third_party/sqlite-objstore/src/backend_fs_common.c
+++ b/third_party/sqlite-objstore/src/backend_fs_common.c
@@ -2,6 +2,7 @@
 
 #if defined(_WIN32)
 #include "win_dirent.h"
+#include "win_posix.h"
 #else
 #include <dirent.h>
 #endif
diff --git a/third_party/sqlite-objstore/src/win_posix.h b/third_party/sqlite-objstore/src/win_posix.h
index 85c0e89d..04d400bc 100644
--- a/third_party/sqlite-objstore/src/win_posix.h
+++ b/third_party/sqlite-objstore/src/win_posix.h
@@ -51,6 +51,12 @@
 #define LOCK_NB 4
 #define LOCK_UN 8
 #endif
+#ifndef S_ISDIR
+#define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
+#endif
+#ifndef S_ISREG
+#define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
+#endif
 
 #ifdef __cplusplus
 extern "C" {