diff --git a/hikey.mk b/hikey.mk
index 73aeb109a59fa7bc93be1e12015ca48c89878093..85e33a14769ff198bd59d14c20758b19aba6f884 100644
--- a/hikey.mk
+++ b/hikey.mk
@@ -81,7 +81,6 @@ prepare-cleaner:
 # ARM Trusted Firmware
 ################################################################################
 ARM_TF_EXPORTS ?= \
-	CFLAGS="-O0 -gdwarf-2" \
 	CROSS_COMPILE="$(CCACHE)$(AARCH64_CROSS_COMPILE)"
 
 ARM_TF_FLAGS ?= \
diff --git a/hikey_debian.mk b/hikey_debian.mk
index 8c841188f678cabb8060a6092bccb859f5d13575..8d51a57cbf318f421590d35e8dc91da8cd951cf8 100644
--- a/hikey_debian.mk
+++ b/hikey_debian.mk
@@ -107,7 +107,6 @@ prepare-cleaner:
 # ARM Trusted Firmware
 ################################################################################
 ARM_TF_EXPORTS ?= \
-	CFLAGS="-O0 -gdwarf-2" \
 	CROSS_COMPILE="$(CCACHE)$(AARCH64_CROSS_COMPILE)"
 
 ARM_TF_FLAGS ?= \