diff --git a/lib/libelf/Makefile b/lib/libelf/Makefile
index c15ce2798a91..d6d8754e2b4f 100644
--- a/lib/libelf/Makefile
+++ b/lib/libelf/Makefile
@@ -80,7 +80,7 @@ INCS=		libelf.h gelf.h
 SRCS+=	sys/elf32.h sys/elf64.h sys/elf_common.h
 
 # Allow bootstrapping elftoolchain on Linux:
-.if defined(BOOTSTRAPPING) && ${.MAKE.OS} == "Linux"
+.if defined(BOOTSTRAPPING)
 native-elf-format.h:
 	${ELFTCDIR}/common/native-elf-format > ${.TARGET} || rm ${.TARGET}
 SRCS+=	native-elf-format.h