diff --git a/etc/centos/fpm-make.sh b/etc/centos/fpm-make.sh
index f0880c9..0661aa9 100755
--- a/etc/centos/fpm-make.sh
+++ b/etc/centos/fpm-make.sh
@@ -7,8 +7,8 @@ tempdir=$(mktemp -d /tmp/ot-XXX)
 make install DESTDIR=$tempdir
 
 mkdir -p $tempdir/usr/share/doc/ot-recorder
-install -D README.md $tempdir/usr/share/doc/ot-recorder/README.md
-install -D etc/ot-recorder.service $tempdir/usr/share/doc/ot-recorder/ot-recorder.service
+install -D -m644 README.md $tempdir/usr/share/doc/ot-recorder/README.md
+install -D -m644 etc/ot-recorder.service $tempdir/usr/share/doc/ot-recorder/ot-recorder.service
 
 
 name="ot-recorder"
diff --git a/etc/debian/fpm-make.sh b/etc/debian/fpm-make.sh
index f2dca6a..ef50a3b 100755
--- a/etc/debian/fpm-make.sh
+++ b/etc/debian/fpm-make.sh
@@ -6,8 +6,8 @@ tempdir=$(mktemp -d /tmp/ot-XXX)
 
 make install DESTDIR=$tempdir
 
-install -D README.md $tempdir/usr/share/doc/ot-recorder/README.md
-install -D etc/ot-recorder.service $tempdir/usr/share/doc/ot-recorder/ot-recorder.service
+install -D -m644 README.md $tempdir/usr/share/doc/ot-recorder/README.md
+install -D -m644 etc/ot-recorder.service $tempdir/usr/share/doc/ot-recorder/ot-recorder.service
 
 name="ot-recorder"
 # add -0 to indicate "not in Debian" as per Roger's suggestion
diff --git a/etc/raspbian/fpm-make.sh b/etc/raspbian/fpm-make.sh
index 3e39324..d8f6714 100755
--- a/etc/raspbian/fpm-make.sh
+++ b/etc/raspbian/fpm-make.sh
@@ -6,8 +6,8 @@ tempdir=$(mktemp -d /tmp/ot-XXX)
 
 make install DESTDIR=$tempdir
 
-install -D README.md $tempdir/usr/share/doc/ot-recorder/README.md
-install -D etc/ot-recorder.service $tempdir/usr/share/doc/ot-recorder/ot-recorder.service
+install -D -m644 README.md $tempdir/usr/share/doc/ot-recorder/README.md
+install -D -m644 etc/ot-recorder.service $tempdir/usr/share/doc/ot-recorder/ot-recorder.service
 
 name="ot-recorder"
 # add -0 to indicate "not in Debian" as per Roger's suggestion