diff --git a/lib/databases/mysql b/lib/databases/mysql
index fb55b60ff6..7ae9a936d6 100644
--- a/lib/databases/mysql
+++ b/lib/databases/mysql
@@ -85,12 +85,12 @@ function configure_database_mysql {
         sudo mysqladmin -u root password $DATABASE_PASSWORD || true
     fi
 
-    # Update the DB to give user ‘$DATABASE_USER’@’%’ full control of the all databases:
+    # Update the DB to give user '$DATABASE_USER'@'%' full control of the all databases:
     sudo mysql -uroot -p$DATABASE_PASSWORD -h127.0.0.1 -e "GRANT ALL PRIVILEGES ON *.* TO '$DATABASE_USER'@'%' identified by '$DATABASE_PASSWORD';"
 
     # Now update ``my.cnf`` for some local needs and restart the mysql service
 
-    # Change ‘bind-address’ from localhost (127.0.0.1) to any (::) and
+    # Change bind-address from localhost (127.0.0.1) to any (::) and
     # set default db type to InnoDB
     sudo bash -c "source $TOP_DIR/functions && \
         iniset $my_conf mysqld bind-address "$SERVICE_LISTEN_ADDRESS" && \
diff --git a/lib/swift b/lib/swift
index 96d730ef2c..dac121be0c 100644
--- a/lib/swift
+++ b/lib/swift
@@ -97,7 +97,7 @@ SWIFT_EXTRAS_MIDDLEWARE_LAST=${SWIFT_EXTRAS_MIDDLEWARE_LAST:-}
 # the beginning of the pipeline, before authentication middlewares.
 SWIFT_EXTRAS_MIDDLEWARE_NO_AUTH=${SWIFT_EXTRAS_MIDDLEWARE_NO_AUTH:-crossdomain}
 
-# The ring uses a configurable number of bits from a path’s MD5 hash as
+# The ring uses a configurable number of bits from a path's MD5 hash as
 # a partition index that designates a device. The number of bits kept
 # from the hash is known as the partition power, and 2 to the partition
 # power indicates the partition count. Partitioning the full MD5 hash
diff --git a/lib/tempest b/lib/tempest
index 6863bae9de..e7f825f417 100644
--- a/lib/tempest
+++ b/lib/tempest
@@ -391,7 +391,7 @@ function configure_tempest {
     # and is now the default behavior.
     iniset $TEMPEST_CONFIG compute-feature-enabled allow_duplicate_networks ${NOVA_ALLOW_DUPLICATE_NETWORKS:-True}
 
-    # Network
+    # Network
     iniset $TEMPEST_CONFIG network api_version 2.0
     iniset $TEMPEST_CONFIG network tenant_networks_reachable "$tenant_networks_reachable"
     iniset $TEMPEST_CONFIG network public_network_id "$public_network_id"
@@ -473,7 +473,7 @@ function configure_tempest {
     if [[ ! -z "$DISABLE_VOLUME_API_EXTENSIONS" ]]; then
         # Enabled extensions are either the ones explicitly specified or those available on the API endpoint
         volume_api_extensions=${VOLUME_API_EXTENSIONS:-$(iniget $tmp_cfg_file volume-feature-enabled api_extensions | tr -d " ")}
-        # Remove disabled extensions
+        # Remove disabled extensions
         volume_api_extensions=$(remove_disabled_extensions $volume_api_extensions $DISABLE_VOLUME_API_EXTENSIONS)
     fi
     iniset $TEMPEST_CONFIG volume-feature-enabled api_extensions $volume_api_extensions