diff --git a/include/mdbfakeglib.h b/include/mdbfakeglib.h
index 73541d6..185a10c 100644
--- a/include/mdbfakeglib.h
+++ b/include/mdbfakeglib.h
@@ -96,7 +96,7 @@ typedef struct GOptionContext {
 #define g_free free
 #define g_realloc realloc
 
-#ifdef _WIN32
+#if defined _WIN32 || defined __CYGWIN__
 #define g_strdup _strdup
 #else
 #define g_strdup strdup
diff --git a/src/libmdb/fakeglib.c b/src/libmdb/fakeglib.c
index da884a5..143a07b 100644
--- a/src/libmdb/fakeglib.c
+++ b/src/libmdb/fakeglib.c
@@ -83,7 +83,7 @@ char *g_strconcat(const char *first, ...) {
     return ret;
 }
 
-#ifdef _WIN32
+#if defined _WIN32 || defined __CYGWIN__
 int vasprintf(char **ret, const char *format, va_list ap) {
     int len;
     int retval;