diff --git a/OpenCorePkg.dsc b/OpenCorePkg.dsc
index 962cc804..23d5885a 100755
--- a/OpenCorePkg.dsc
+++ b/OpenCorePkg.dsc
@@ -116,4 +116,4 @@
   MSFT:RELEASE_*_*_CC_FLAGS  = $(OCPKG_BUILD_OPTIONS_GEN) -D OC_RELEASE_TARGET
   XCODE:DEBUG_*_*_CC_FLAGS   = $(OCPKG_BUILD_OPTIONS_GEN) -D OC_DEBUG_TARGET
   XCODE:NOOPT_*_*_CC_FLAGS   = $(OCPKG_BUILD_OPTIONS_GEN) -D OC_NOOPT_TARGET
-  XCODE:RELEASE_*_*_CC_FLAGS = -flto $(OCPKG_BUILD_OPTIONS_GEN) -D OC_RELEASE_TARGET
+  XCODE:RELEASE_*_*_CC_FLAGS = -Oz -flto $(OCPKG_BUILD_OPTIONS_GEN) -D OC_RELEASE_TARGET