diff --git a/postgres/Dockerfile b/postgres/Dockerfile
index eead3c765..19f8468da 100644
--- a/postgres/Dockerfile
+++ b/postgres/Dockerfile
@@ -29,8 +29,8 @@ ENV S6_CMD_WAIT_FOR_SERVICES=1 \
 
 RUN \
     # Correct for access
-    sed -i "s/.*listen_addresses(.*)/listen_addresses = '*'(1)/g" /usr/local/share/postgresql/postgresql.conf.sample && \
-    sed -i "s/.*data_directory(.*)/data_directory = '/data/database'(1)/g" /usr/local/share/postgresql/postgresql.conf.sample
+    sed -i "s|.*listen_addresses(.*)|listen_addresses = '*'(1)|g" /usr/local/share/postgresql/postgresql.conf.sample && \
+    sed -i "s|.*data_directory(.*)|data_directory = '/data/database'(1)|g" /usr/local/share/postgresql/postgresql.conf.sample
 
 ##################
 # 3 Install apps #