diff --git a/src/plugin_common/dither.h b/src/plugin_common/dither.h
index 9e44cc29..8f1fce58 100644
--- a/src/plugin_common/dither.h
+++ b/src/plugin_common/dither.h
@@ -21,10 +21,9 @@
 
 #include "export.h"
 
+#include "defs.h" /* buy FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS for the caller */
 #include "FLAC/ordinals.h"
 
-#define FLAC_PLUGIN__MAX_SUPPORTED_CHANNELS 2
-
 PLUGIN_COMMON_API unsigned FLAC__plugin_common__pack_pcm_signed_little_endian(FLAC__byte *data, FLAC__int32 *input, unsigned wide_samples, unsigned channels, unsigned source_bps, unsigned target_bps);
 
 #endif