diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 8d1e7bd14c55..a5f2eb5f89ce 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -51,6 +51,8 @@ OLDARCH	:= ppc
 SZ	:= 32
 endif
 
+UTS_MACHINE := $(OLDARCH)
+
 ifeq ($(HAS_BIARCH),y)
 override AS	+= -a$(SZ)
 override LD	+= -m elf$(SZ)ppc