diff --git a/config/environments/development.js.example b/config/environments/development.js.example
index f09a3808..2bc6d2d6 100644
--- a/config/environments/development.js.example
+++ b/config/environments/development.js.example
@@ -108,6 +108,9 @@ var config = {
       cache_ttl: 60000,
       statsInterval: 5000, // milliseconds between each report to statsd about number of renderers and mapnik pool status
       mvt: {
+        //If enabled, MVTs will be generated with PostGIS directly, instead of using Mapnik,
+        //PostGIS 2.4 is required for this to work
+        //If disabled it will use Mapnik MVT generation
         usePgSQL: false
       },
       mapnik: {
diff --git a/config/environments/production.js.example b/config/environments/production.js.example
index 1dd80212..87214c75 100644
--- a/config/environments/production.js.example
+++ b/config/environments/production.js.example
@@ -102,6 +102,9 @@ var config = {
       cache_ttl: 60000,
       statsInterval: 5000, // milliseconds between each report to statsd about number of renderers and mapnik pool status
       mvt: {
+        //If enabled, MVTs will be generated with PostGIS directly, instead of using Mapnik,
+        //PostGIS 2.4 is required for this to work
+        //If disabled it will use Mapnik MVT generation
         usePgSQL: false
       },
       mapnik: {
diff --git a/config/environments/staging.js.example b/config/environments/staging.js.example
index 7dd9f5b0..5e05c83f 100644
--- a/config/environments/staging.js.example
+++ b/config/environments/staging.js.example
@@ -102,6 +102,9 @@ var config = {
       cache_ttl: 60000,
       statsInterval: 5000, // milliseconds between each report to statsd about number of renderers and mapnik pool status
       mvt: {
+        //If enabled, MVTs will be generated with PostGIS directly, instead of using Mapnik,
+        //PostGIS 2.4 is required for this to work
+        //If disabled it will use Mapnik MVT generation
         usePgSQL: false
       },
       mapnik: {
diff --git a/config/environments/test.js.example b/config/environments/test.js.example
index b266c923..c01d52d1 100644
--- a/config/environments/test.js.example
+++ b/config/environments/test.js.example
@@ -101,6 +101,9 @@ var config = {
       cache_ttl: 60000,
       statsInterval: 5000, // milliseconds between each report to statsd about number of renderers and mapnik pool status
       mvt: {
+        //If enabled, MVTs will be generated with PostGIS directly, instead of using Mapnik,
+        //PostGIS 2.4 is required for this to work
+        //If disabled it will use Mapnik MVT generation
         usePgSQL: false
       },
       mapnik: {