diff --git a/arch/x86/config.mk b/arch/x86/config.mk
index 27d8412661..3067702858 100644
--- a/arch/x86/config.mk
+++ b/arch/x86/config.mk
@@ -39,10 +39,10 @@ LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined -s
 OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
 	-j .rel -j .rela -j .reloc
 
-ifeq ($(IS_32BIT),y)
-CFLAGS_NON_EFI := -mregparm=3
-endif
+# Compiler flags to be added when building UEFI applications
 CFLAGS_EFI := -fpic -fshort-wchar
+# Compiler flags to be removed when building UEFI applications
+CFLAGS_NON_EFI := -mregparm=3
 
 ifeq ($(CONFIG_EFI_STUB_64BIT),)
 CFLAGS_EFI += $(call cc-option, -mno-red-zone)
@@ -70,7 +70,9 @@ LDSCRIPT := $(LDSCRIPT_EFI)
 
 else
 
-PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
+ifeq ($(IS_32BIT),y)
+PLATFORM_CPPFLAGS += -mregparm=3
+endif
 KBUILD_LDFLAGS += --emit-relocs
 LDFLAGS_FINAL += --gc-sections $(if $(CONFIG_SPL_BUILD),,-pie)