diff --git a/src/common/SoundSDL.cpp b/src/common/SoundSDL.cpp
index c1785b8c..8733ca5c 100644
--- a/src/common/SoundSDL.cpp
+++ b/src/common/SoundSDL.cpp
@@ -20,6 +20,9 @@
 extern int emulating;
 extern bool speedup;
 
+// Hold up to 100 ms of data in the ring buffer
+const float SoundSDL::_delay = 0.1f;
+
 SoundSDL::SoundSDL():
 	_rbuf(0)
 {
diff --git a/src/common/SoundSDL.h b/src/common/SoundSDL.h
index 70cf1f0e..34c2b729 100644
--- a/src/common/SoundSDL.h
+++ b/src/common/SoundSDL.h
@@ -41,8 +41,8 @@ private:
 	SDL_cond  * _cond;
 	SDL_mutex * _mutex;
 
-	// Hold up to 100 ms of data in the ring buffer
-	static const float _delay = 0.1f;
+	// Defines what delay in seconds we keep in the sound buffer
+	static const float _delay;
 
 	static void soundCallback(void *data, u8 *stream, int length);
 	virtual void read(u16 * stream, int length);