diff --git a/sqlite3.go b/sqlite3.go
index 24b6cfd..15c7003 100644
--- a/sqlite3.go
+++ b/sqlite3.go
@@ -6,13 +6,17 @@
 package sqlite3
 
 /*
-#ifdef _WIN32
-# define _localtime32(x) localtime(x)
-#endif
 #include <sqlite3.h>
 #include <stdlib.h>
 #include <string.h>
 
+#ifdef _WIN32
+#include <time.h>
+struct tm* _localtime32(const __time32_t *tm) {
+  return localtime(tm);
+}
+#endif
+
 #ifdef __CYGWIN__
 # include <errno.h>
 #endif
@@ -25,6 +29,10 @@ package sqlite3
 # define SQLITE_OPEN_FULLMUTEX 0
 #endif
 
+#ifndef SQLITE_THREADSAFE
+# define SQLITE_THREADSAFE
+#endif
+
 static int
 _sqlite3_open_v2(const char *filename, sqlite3 **ppDb, int flags, const char *zVfs) {
 #ifdef SQLITE_OPEN_URI