diff --git a/types/gulp-jsonmin/gulp-jsonmin-tests.ts b/types/gulp-jsonmin/gulp-jsonmin-tests.ts
index 23d4ea5427..e13ec2c69f 100644
--- a/types/gulp-jsonmin/gulp-jsonmin-tests.ts
+++ b/types/gulp-jsonmin/gulp-jsonmin-tests.ts
@@ -1,4 +1,14 @@
+import gulp = require('gulp');
 import gulpJsonmin = require('gulp-jsonmin');
 
-gulpJsonmin();
-gulpJsonmin({ verbose: true });
+gulp.task('build', () => {
+    return gulp.src('*.json')
+        .pipe(gulpJsonmin())
+        .pipe(gulp.dest('dist'));
+});
+
+gulp.task('build', () => {
+    return gulp.src('*.json')
+        .pipe(gulpJsonmin({ verbose: true }))
+        .pipe(gulp.dest('dist'));
+});
diff --git a/types/gulp-jsonmin/index.d.ts b/types/gulp-jsonmin/index.d.ts
index b246ead5b4..f5502d95cd 100644
--- a/types/gulp-jsonmin/index.d.ts
+++ b/types/gulp-jsonmin/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for gulp-jsonmin 1.2
+// Type definitions for gulp-jsonmin 1.1
 // Project: https://github.com/englercj/gulp-jsonmin
 // Definitions by: Romain Faust <https://github.com/romain-faust>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -7,12 +7,12 @@
 
 import { Transform } from 'stream';
 
-declare function jsonmin(options?: jsonmin.Options): Transform;
+declare function GulpJsonmin(options?: GulpJsonmin.Options): Transform;
 
-declare namespace jsonmin {
+declare namespace GulpJsonmin {
     interface Options {
         verbose?: boolean;
     }
 }
 
-export = jsonmin;
+export = GulpJsonmin;