diff --git a/package/opus/opus.mk b/package/opus/opus.mk
index 3fb2d5d65f..4f816df477 100644
--- a/package/opus/opus.mk
+++ b/package/opus/opus.mk
@@ -17,6 +17,7 @@ OPUS_CFLAGS += -O0
 endif
 
 OPUS_CONF_ENV = CFLAGS="$(OPUS_CFLAGS)"
+OPUS_CONF_OPTS = --enable-custom-modes
 
 ifeq ($(BR2_PACKAGE_OPUS_FIXED_POINT),y)
 OPUS_CONF_OPTS += --enable-fixed-point