diff --git a/repos/dde_linux/lib/mk/lxip.mk b/repos/dde_linux/lib/mk/lxip.mk
index 82f7f3ee26..dd31a72861 100644
--- a/repos/dde_linux/lib/mk/lxip.mk
+++ b/repos/dde_linux/lib/mk/lxip.mk
@@ -8,8 +8,6 @@ LIBS += lxip_include
 LX_CONTRIB_DIR := $(call select_from_ports,dde_linux)/src/lib/lxip
 NET_DIR        := $(LX_CONTRIB_DIR)/net
 
-CC_OLEVEL = -O2
-
 SETUP_SUFFIX =
 CC_OPT += -DSETUP_SUFFIX=$(SETUP_SUFFIX)
 
diff --git a/repos/dde_linux/lib/mk/usb.inc b/repos/dde_linux/lib/mk/usb.inc
index 24166d056f..94a136f604 100644
--- a/repos/dde_linux/lib/mk/usb.inc
+++ b/repos/dde_linux/lib/mk/usb.inc
@@ -10,8 +10,6 @@ LX_CONTRIB_DIR := $(call select_from_ports,dde_linux)/src/lib/usb
 DRIVERS_DIR    := $(LX_CONTRIB_DIR)/drivers
 USB_DIR        := $(DRIVERS_DIR)/usb
 
-CC_OLEVEL = -O2
-
 #
 # The order of include-search directories is important, we need to look into
 # 'contrib' before falling back to our custom 'lx_emul.h' header.