diff --git a/lib/model.js b/lib/model.js
index 5ff590a4e15..26dd0ea674e 100644
--- a/lib/model.js
+++ b/lib/model.js
@@ -1633,9 +1633,15 @@ function _ensureIndexes(model, options, callback) {
 
     const indexFields = utils.clone(index[0]);
     const indexOptions = utils.clone(index[1]);
-    const textBlock = Object.keys(indexFields).map(function(key) {
-      return indexFields[key];
-    });
+    const textBlock = () => {
+      const results = Object.keys(indexFields).map(function(key) {
+        return indexFields[key];
+      });
+      if (!results.includes('text')) {
+        return true;
+      }
+      return false;
+    };
     delete indexOptions._autoIndex;
     _decorateDiscriminatorIndexOptions(model, indexOptions);
     if ('safe' in options) {
@@ -1655,7 +1661,7 @@ function _ensureIndexes(model, options, callback) {
       indexOptions.background = options.background;
     }
     if (model.schema.options.hasOwnProperty('collation') &&
-        !indexOptions.hasOwnProperty('collation') && textBlock != 'text') {
+        !indexOptions.hasOwnProperty('collation') && textBlock()) {
       indexOptions.collation = model.schema.options.collation;
     }