--- libavdevice/avfoundation.m
+++ libavdevice/avfoundation.m
@@ -763,6 +763,11 @@ static int get_audio_config(AVFormatContext *s)
     return 0;
 }

+#if (defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MAX_ALLOWED < 110000) || \
+    ((!defined(TARGET_OS_OSX) || TARGET_OS_OSX) && __MAC_OS_X_VERSION_MAX_ALLOWED < 101300)
+typedef NSString* AVMediaType;
+#endif
+
 static NSArray* getDevicesWithMediaType(AVMediaType mediaType) {
 #if ((TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED >= 100000) || (TARGET_OS_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101500))
     NSMutableArray *deviceTypes = nil;