diff --git a/ports/attiny85/poly_cfg.h b/ports/attiny85/poly_cfg.h
index d67a2e7..e053d69 100644
--- a/ports/attiny85/poly_cfg.h
+++ b/ports/attiny85/poly_cfg.h
@@ -21,6 +21,6 @@
  * MA  02110-1301  USA
  */
 
-#define SYNTH_FREQ		32000
+#define SYNTH_FREQ		8000
 
 #endif