diff --git a/README.md b/README.md
index 48cb1685c..a953c0f71 100644
--- a/README.md
+++ b/README.md
@@ -9,11 +9,11 @@ appear with Nix.
 
 To find out more about the tool, usage and installation instructions, please
 read the manual, which is available on the Nix website at
-<http://nixos.org/nix/manual>.
+<https://nixos.org/nix/manual>.
 
 ## Contributing
 
-Take a look at the [Hacking Section](http://nixos.org/nix/manual/#chap-hacking)
+Take a look at the [Hacking Section](https://nixos.org/nix/manual/#chap-hacking)
 of the manual. It helps you to get started with building Nix from source.
 
 ## License
@@ -21,4 +21,4 @@ of the manual. It helps you to get started with building Nix from source.
 Nix is released under the LGPL v2.1
 
 This product includes software developed by the OpenSSL Project for
-use in the [OpenSSL Toolkit](http://www.OpenSSL.org/).
+use in the [OpenSSL Toolkit](https://www.OpenSSL.org/).
diff --git a/scripts/install-nix-from-closure.sh b/scripts/install-nix-from-closure.sh
index 3fea7e056..e00708f6c 100644
--- a/scripts/install-nix-from-closure.sh
+++ b/scripts/install-nix-from-closure.sh
@@ -87,7 +87,7 @@ if ! [ -e $dest ]; then
 fi
 
 if ! [ -w $dest ]; then
-    echo "$0: directory $dest exists, but is not writable by you. This could indicate that another user has already performed a single-user installation of Nix on this system. If you wish to enable multi-user support see http://nixos.org/nix/manual/#ssec-multi-user. If you wish to continue with a single-user install for $USER please run 'chown -R $USER $dest' as root." >&2
+    echo "$0: directory $dest exists, but is not writable by you. This could indicate that another user has already performed a single-user installation of Nix on this system. If you wish to enable multi-user support see https://nixos.org/nix/manual/#ssec-multi-user. If you wish to continue with a single-user install for $USER please run 'chown -R $USER $dest' as root." >&2
     exit 1
 fi