diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index dfe272d14465..113225b241e0 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -27,6 +27,7 @@ AS             := $(AS) -32
 LDFLAGS        := -m elf32_sparc
 CHECKFLAGS     += -D__sparc__
 export BITS    := 32
+UTS_MACHINE    := sparc
 
 #KBUILD_CFLAGS += -g -pipe -fcall-used-g5 -fcall-used-g7
 KBUILD_CFLAGS += -m32 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7
@@ -46,6 +47,7 @@ CHECKFLAGS      += -D__sparc__ -D__sparc_v9__ -D__arch64__ -m64
 
 LDFLAGS              := -m elf64_sparc
 export BITS          := 64
+UTS_MACHINE          := sparc64
 
 KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow   \
                  -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare \