diff --git a/package/python3/python3.mk b/package/python3/python3.mk
index 0189a505b4..4e660ecee2 100644
--- a/package/python3/python3.mk
+++ b/package/python3/python3.mk
@@ -192,7 +192,7 @@ endif
 PYTHON3_CFLAGS = $(TARGET_CFLAGS)
 
 ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_121567),y)
-PYTHON3_CFLAGS += -O1
+PYTHON3_CFLAGS += -O0
 endif
 
 PYTHON3_CONF_ENV += \