diff --git a/lodash/lodash-tests.ts b/lodash/lodash-tests.ts
index 3afc49041b..c1b4d3bd5d 100644
--- a/lodash/lodash-tests.ts
+++ b/lodash/lodash-tests.ts
@@ -3904,8 +3904,20 @@ module TestRepeat {
 }
 
 // _.snakeCase
-result = <string>_.snakeCase('Foo Bar');
-result = <string>_('Foo Bar').snakeCase();
+module TestSnakeCase {
+    {
+        let result: string;
+
+        result = _.snakeCase('Foo Bar');
+        result = _('Foo Bar').snakeCase();
+    }
+
+    {
+        let result: _.LoDashExplicitWrapper<string>;
+
+        result = _('Foo Bar').chain().snakeCase();
+    }
+}
 
 // _.startCase
 module TestStartCase {
diff --git a/lodash/lodash.d.ts b/lodash/lodash.d.ts
index d143f4e657..b775cd8249 100644
--- a/lodash/lodash.d.ts
+++ b/lodash/lodash.d.ts
@@ -9440,6 +9440,7 @@ declare module _ {
     interface LoDashStatic {
         /**
          * Converts string to snake case.
+         *
          * @param string The string to convert.
          * @return Returns the snake cased string.
          */
@@ -9453,6 +9454,13 @@ declare module _ {
         snakeCase(): string;
     }
 
+    interface LoDashExplicitWrapper<T> {
+        /**
+         * @see _.snakeCase
+         */
+        snakeCase(): LoDashExplicitWrapper<string>;
+    }
+
     //_.startCase
     interface LoDashStatic {
         /**