diff --git a/gnu/packages/patches/glibc-allow-kernel-2.6.32.patch b/gnu/packages/patches/glibc-allow-kernel-2.6.32.patch
index ce18b874c4..c03807323f 100644
--- a/gnu/packages/patches/glibc-allow-kernel-2.6.32.patch
+++ b/gnu/packages/patches/glibc-allow-kernel-2.6.32.patch
@@ -1,3 +1,10 @@
+This patch allows libc to be used with the heavily-patched kernel found
+on CentOS 6, which identifies itself as 2.6.32.
+
+See <https://lists.gnu.org/archive/html/guix-devel/2018-02/msg00392.html>.
+
+Patch taken from Nixpkgs.
+
 diff --git a/sysdeps/unix/sysv/linux/configure b/sysdeps/unix/sysv/linux/configure
 index cace758c01..38fe7fe0b0 100644
 --- a/sysdeps/unix/sysv/linux/configure