diff --git a/.travis.yml b/.travis.yml
index 61ec1d47..95cd9d8e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -21,9 +21,9 @@ before_install:
   - echo "hostssl   all         pgx_ssl     127.0.0.1/32          md5"      >> /etc/postgresql/$PGVERSION/main/pg_hba.conf
   - echo "host      replication pgx_replication 127.0.0.1/32      md5"      >> /etc/postgresql/$PGVERSION/main/pg_hba.conf
   - sudo chmod 777 /etc/postgresql/$PGVERSION/main/postgresql.conf
-  - [[ $PGVERSION > 9.3 ]] && echo "wal_level='logical'"     >> /etc/postgresql/$PGVERSION/main/postgresql.conf
-  - [[ $PGVERSION > 9.3 ]] && echo "max_wal_senders=5"       >> /etc/postgresql/$PGVERSION/main/postgresql.conf
-  - [[ $PGVERSION > 9.3 ]] && echo "max_replication_slots=5" >> /etc/postgresql/$PGVERSION/main/postgresql.conf
+  - "[[ $PGVERSION > 9.3 ]] && echo \"wal_level='logical'\"     >> /etc/postgresql/$PGVERSION/main/postgresql.conf"
+  - "[[ $PGVERSION > 9.3 ]] && echo \"max_wal_senders=5\"       >> /etc/postgresql/$PGVERSION/main/postgresql.conf"
+  - "[[ $PGVERSION > 9.3 ]] && echo \"max_replication_slots=5\" >> /etc/postgresql/$PGVERSION/main/postgresql.conf"
   - sudo /etc/init.d/postgresql restart
 
 env: