diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 4e3ef5ed2a..bcfa7e3b1b 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -29,14 +29,12 @@
   # Defines for default states.  These can be changed on the command line.
   # -D FLAG=VALUE
   #
-  DEFINE SECURE_BOOT_ENABLE      = TRUE
-  DEFINE SMM_REQUIRE             = TRUE
+  DEFINE SECURE_BOOT_ENABLE      = FALSE
+  DEFINE SMM_REQUIRE             = FALSE
   DEFINE SOURCE_DEBUG_ENABLE     = FALSE
 
 !include OvmfPkg/OvmfTpmDefines.dsc.inc
 
-  DEFINE DEBUG_ON_SERIAL_PORT = TRUE
-
   #
   # Shell can be useful for debugging but should not be enabled for production
   #