diff --git a/include/Mixer.h b/include/Mixer.h
index e51c168c5..3f0ea0fb6 100644
--- a/include/Mixer.h
+++ b/include/Mixer.h
@@ -57,6 +57,7 @@ class MidiClient;
 class AudioPort;
 
 
+const fpp_t MINIMUM_BUFFER_SIZE = 32;
 const fpp_t DEFAULT_BUFFER_SIZE = 256;
 
 const int BYTES_PER_SAMPLE = sizeof( sample_t );