diff --git a/config/optimize b/config/optimize
index d4a596d3c7..e75be6011d 100644
--- a/config/optimize
+++ b/config/optimize
@@ -10,7 +10,7 @@ if [ "$GOLD_SUPPORT" = yes ];then
   LD_OPTIM_GOLD="-fuse-ld=gold"
 fi
 
-if [ "$DEBUG" = yes ]; then
+if [ "${BUILD_WITH_DEBUG}" = "yes" ]; then
   TARGET_CFLAGS="$TARGET_CFLAGS -ggdb"
   TARGET_CXXFLAGS="$TARGET_CXXFLAGS -ggdb"
   TARGET_LDFLAGS="$TARGET_LDFLAGS -ggdb"