diff --git a/gnu/usr.bin/diff/Makefile b/gnu/usr.bin/diff/Makefile
index 25d439f83e5..ba5ab653834 100644
--- a/gnu/usr.bin/diff/Makefile
+++ b/gnu/usr.bin/diff/Makefile
@@ -29,7 +29,7 @@ LDADD=	-lgnuregex
 
 .for f in diff.c context.c
 ${f}: ${DIFFSRC}/${f} ${.CURDIR}/${f}.diff
-	patch -s -b .orig -o ${.TARGET} < ${.CURDIR}/${f}.diff ${DIFFSRC}/${f}
+	patch -s -o ${.TARGET} < ${.CURDIR}/${f}.diff ${DIFFSRC}/${f}
 CLEANFILES+= ${f}
 .endfor
 
diff --git a/gnu/usr.bin/diff3/Makefile b/gnu/usr.bin/diff3/Makefile
index 9fbb5dba615..6e9f8670d19 100644
--- a/gnu/usr.bin/diff3/Makefile
+++ b/gnu/usr.bin/diff3/Makefile
@@ -20,7 +20,7 @@ CFLAGS+=-DDEFAULT_DIFF_PROGRAM=\"/usr/bin/diff\"
 
 .for f in diff3.c
 ${f}: ${DIFFSRC}/${f} ${.CURDIR}/${f}.diff
-	patch -s -b .orig -o ${.TARGET} < ${.CURDIR}/${f}.diff ${DIFFSRC}/${f}
+	patch -s -o ${.TARGET} < ${.CURDIR}/${f}.diff ${DIFFSRC}/${f}
 CLEANFILES+= ${f}
 .endfor
 
diff --git a/gnu/usr.bin/sdiff/Makefile b/gnu/usr.bin/sdiff/Makefile
index c40cd4d9d56..efadcf2b8b2 100644
--- a/gnu/usr.bin/sdiff/Makefile
+++ b/gnu/usr.bin/sdiff/Makefile
@@ -21,7 +21,7 @@ CFLAGS+=-DDEFAULT_DIFF_PROGRAM=\"/usr/bin/diff\"
 
 .for f in sdiff.c
 ${f}: ${DIFFSRC}/${f} ${.CURDIR}/${f}.diff
-	patch -s -b .orig -o ${.TARGET} < ${.CURDIR}/${f}.diff ${DIFFSRC}/${f}
+	patch -s -o ${.TARGET} < ${.CURDIR}/${f}.diff ${DIFFSRC}/${f}
 CLEANFILES+= ${f}
 .endfor