diff --git a/package/opus/opus.mk b/package/opus/opus.mk
index f23461a3af..3fb2d5d65f 100644
--- a/package/opus/opus.mk
+++ b/package/opus/opus.mk
@@ -10,6 +10,14 @@ OPUS_LICENSE = BSD-3-Clause
 OPUS_LICENSE_FILES = COPYING
 OPUS_INSTALL_STAGING = YES
 
+OPUS_CFLAGS = $(TARGET_CFLAGS)
+
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
+OPUS_CFLAGS += -O0
+endif
+
+OPUS_CONF_ENV = CFLAGS="$(OPUS_CFLAGS)"
+
 ifeq ($(BR2_PACKAGE_OPUS_FIXED_POINT),y)
 OPUS_CONF_OPTS += --enable-fixed-point
 endif