diff --git a/src/InputHandler.api.ts b/src/InputHandler.api.ts
index 878925ba..ef92f29d 100644
--- a/src/InputHandler.api.ts
+++ b/src/InputHandler.api.ts
@@ -14,7 +14,7 @@ let page: puppeteer.Page;
 const width = 800;
 const height = 600;
 
-describe('InputHandler Integration Tests', function() {
+describe('InputHandler Integration Tests', function(): void {
   this.timeout(10000);
 
   before(async function(): Promise<any> {
diff --git a/src/public/Terminal.api.ts b/src/public/Terminal.api.ts
index c784471e..afad2699 100644
--- a/src/public/Terminal.api.ts
+++ b/src/public/Terminal.api.ts
@@ -14,7 +14,7 @@ let page: puppeteer.Page;
 const width = 800;
 const height = 600;
 
-describe('API Integration Tests', function() {
+describe('API Integration Tests', function(): void {
   this.timeout(10000);
 
   before(async function(): Promise<any> {