diff --git a/config/environments/development.js.example b/config/environments/development.js.example
index 231226de..df067180 100644
--- a/config/environments/development.js.example
+++ b/config/environments/development.js.example
@@ -21,7 +21,7 @@ var config = {
         extent: "-180,-90,180,90",
         srid: 4326,
         */
-        simplify: true,
+        simplify_geometries: true,
         max_size: 500
     }
     ,mapnik_version: undefined
diff --git a/config/environments/production.js.example b/config/environments/production.js.example
index a79f9933..b5be4040 100644
--- a/config/environments/production.js.example
+++ b/config/environments/production.js.example
@@ -15,7 +15,7 @@ var config = {
         host: '127.0.0.1',
         port: 6432,
         extent: "-20037508.3,-20037508.3,20037508.3,20037508.3",
-        simplify: true,
+        simplify_geometries: true,
         max_size: 500
     }
     ,mapnik_version: undefined
diff --git a/config/environments/staging.js.example b/config/environments/staging.js.example
index 8765b73c..561e0385 100644
--- a/config/environments/staging.js.example
+++ b/config/environments/staging.js.example
@@ -15,7 +15,7 @@ var config = {
         host: '127.0.0.1',
         port: 6432,
         extent: "-20037508.3,-20037508.3,20037508.3,20037508.3",
-        simplify: true,
+        simplify_geometries: true,
         max_size: 500
     }
     ,mapnik_version: undefined
diff --git a/config/environments/test.js.example b/config/environments/test.js.example
index 63057607..2136be14 100644
--- a/config/environments/test.js.example
+++ b/config/environments/test.js.example
@@ -15,7 +15,7 @@ var config = {
         host: '127.0.0.1',
         port: 5432,
         extent: "-20037508.3,-20037508.3,20037508.3,20037508.3",
-        simplify: true,
+        simplify_geometries: true,
         max_size: 500
     }
     ,mapnik_version: '2.0.2'