diff --git a/include/SFML/Audio/SoundRecorder.h b/include/SFML/Audio/SoundRecorder.h
index b555c63..ad57d9d 100644
--- a/include/SFML/Audio/SoundRecorder.h
+++ b/include/SFML/Audio/SoundRecorder.h
@@ -30,6 +30,7 @@
 ////////////////////////////////////////////////////////////
 #include <SFML/Config.h>
 #include <SFML/Audio/Types.h>
+#include <stddef.h>
 
 
 typedef sfBool (*sfSoundRecorderStartCallback)(void*);                           ///< Type of the callback used when starting a capture