diff --git a/types/changelog-parser/changelog-parser-tests.ts b/types/changelog-parser/changelog-parser-tests.ts
index 1195d8077f..69a5ffdab3 100644
--- a/types/changelog-parser/changelog-parser-tests.ts
+++ b/types/changelog-parser/changelog-parser-tests.ts
@@ -5,12 +5,20 @@ const options = {
     removeMarkdown: false
 };
 
-parseChangelog({filePath: 'path/to/CHANGELOG.md'}, (result, error) => {});
+const fn = (obj: object): void => {};
 
-parseChangelog(options, (result, error) => {});
+parseChangelog({filePath: 'path/to/CHANGELOG.md'}, (error, result) => {
+    if (error) {
+        throw error;
+    }
 
-parseChangelog({filePath: 'path/to/CHANGELOG.md'}, (result) => {});
+    fn(result);
+});
 
-parseChangelog(options);
+parseChangelog(options, (error, result) => {});
 
-parseChangelog('path/to/CHANGELOG.md');
+parseChangelog({filePath: 'path/to/CHANGELOG.md'}, (error) => {});
+
+parseChangelog(options).then((result) => {});
+
+parseChangelog('path/to/CHANGELOG.md').then((result) => {});
diff --git a/types/changelog-parser/index.d.ts b/types/changelog-parser/index.d.ts
index 7c03ff3ecd..a1799454c8 100644
--- a/types/changelog-parser/index.d.ts
+++ b/types/changelog-parser/index.d.ts
@@ -19,6 +19,7 @@ interface Options {
 /**
  * Change log parser for node.
  */
-declare function parseChangelog(options: Partial<Options>|string, callback?: (result: object, error: string|null) => void): Promise<object>;
+declare function parseChangelog(options: Partial<Options>|string,
+    callback?: (error: string|null, result: object) => void): Promise<object>;
 
 export = parseChangelog;