diff --git a/include/mdbfakeglib.h b/include/mdbfakeglib.h
index 663a76b..73541d6 100644
--- a/include/mdbfakeglib.h
+++ b/include/mdbfakeglib.h
@@ -96,7 +96,11 @@ typedef struct GOptionContext {
 #define g_free free
 #define g_realloc realloc
 
+#ifdef _WIN32
+#define g_strdup _strdup
+#else
 #define g_strdup strdup
+#endif
 
 #define	G_STR_DELIMITERS "_-|> <."
 
diff --git a/src/libmdb/fakeglib.c b/src/libmdb/fakeglib.c
index a0569d9..da884a5 100644
--- a/src/libmdb/fakeglib.c
+++ b/src/libmdb/fakeglib.c
@@ -92,7 +92,7 @@ int vasprintf(char **ret, const char *format, va_list ap) {
         return -1;
     if ((result = malloc(len+1)) == NULL)
         return -1;
-    if ((retval = _vsprintf_s(result, len+1, format, ap)) == -1) {
+    if ((retval = vsprintf_s(result, len+1, format, ap)) == -1) {
         free(result);
         return -1;
     }