diff --git a/arch/um/Makefile b/arch/um/Makefile
index 4a375bbac109a185718ebe2412472569137a2636..dfcc9eaafaa7eddb672dfae4b4b73991f07271c7 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -116,13 +116,14 @@ CONFIG_KERNEL_STACK_ORDER ?= 2
 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
 
 ifndef START
-  START = $$(($(TOP_ADDR) - $(SIZE)))
+  START = $(shell echo $$[ $(TOP_ADDR) - $(SIZE) ] )
 endif
 
-CPPFLAGS_vmlinux.lds = $(shell echo -U$(SUBARCH) \
+CPPFLAGS_vmlinux.lds = -U$(SUBARCH) \
 	-DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
-	-DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE-y) \
-	-DKERNEL_STACK_SIZE=$(STACK_SIZE) -DSUBARCH=$(SUBARCH))
+	-DELF_FORMAT="$(ELF_FORMAT)" $(CPP_MODE-y) \
+	-DKERNEL_STACK_SIZE=$(STACK_SIZE) \
+	-DUNMAP_PATH=arch/um/sys-$(SUBARCH)/unmap_fin.o
 
 #The wrappers will select whether using "malloc" or the kernel allocator.
 LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
diff --git a/arch/um/kernel/uml.lds.S b/arch/um/kernel/uml.lds.S
index 163476a8cb1b7cef16d8a944049d1d6d899d73fd..b03326d391c9228e200b1d2c9572bbcd7f1be705 100644
--- a/arch/um/kernel/uml.lds.S
+++ b/arch/um/kernel/uml.lds.S
@@ -16,8 +16,8 @@ SECTIONS
   __binary_start = .;
 
 #ifdef MODE_TT
-  .remap_data : { arch/um/sys-SUBARCH/unmap_fin.o (.data .bss) }
-  .remap : { arch/um/sys-SUBARCH/unmap_fin.o (.text) }
+  .remap_data : { UNMAP_PATH (.data .bss) }
+  .remap : { UNMAP_PATH (.text) }
 
   . = ALIGN(4096);		/* Init code and data */
 #endif