diff --git a/server/databases/postgresql.xml b/server/databases/postgresql.xml
index 119a45e342..32a5411661 100644
--- a/server/databases/postgresql.xml
+++ b/server/databases/postgresql.xml
@@ -92,6 +92,7 @@
     following commands: </para>
 
 <screen><userinput>sed -i '/DEFAULT_PGSOCKET_DIR/s@/tmp@/run/postgresql@' src/include/pg_config_manual.h &amp;&amp;
+sed -i "s/copy_file_range/rewind_&amp;/" src/bin/pg_rewind/copy_fetch.c &amp;&amp;
 
 ./configure --prefix=/usr          \
             --enable-thread-safety \
@@ -190,7 +191,8 @@ echo "select * from t1;" | (su - postgres -c '/usr/bin/psql test')</userinput></
       from <filename class="directory">/tmp</filename> to
       <filename class="directory">/run/postgresql</filename><!-- and fix up the
       regression tests to use <filename class="directory">/tmp</filename> so
-      that they can work reliably-->.
+      that they can work reliably-->. Second sed renames a function as
+      glibc-2.27 introduced one with the same name.
     </para>
 
     <para><parameter>--docdir=/usr/share/doc/postgresql-&postgresql-version;</parameter>: