diff --git a/app/src/components/head-nav/head-nav.module.ts b/app/src/components/head-nav/head-nav.module.ts
index 7fb2c00..96140da 100644
--- a/app/src/components/head-nav/head-nav.module.ts
+++ b/app/src/components/head-nav/head-nav.module.ts
@@ -4,10 +4,10 @@ import { HeadNavComponent } from './head-nav';
 
 @NgModule({
   declarations: [
-    HeadNavComponent,
+    HeadNavComponent
   ],
   imports: [
-    IonicModule,
+    IonicModule
   ],
   exports: [
     HeadNavComponent
diff --git a/app/src/providers/currency/currency.spec.ts b/app/src/providers/currency/currency.spec.ts
index d1ef863..2170c01 100644
--- a/app/src/providers/currency/currency.spec.ts
+++ b/app/src/providers/currency/currency.spec.ts
@@ -4,7 +4,7 @@ import { HttpModule } from '@angular/http';
 import { CurrencyProvider } from './currency';
 
 describe('CurrencyProvider', () => {
-  let currency;
+  let currency: CurrencyProvider;
 
   beforeEach(() => {
     TestBed.configureTestingModule({
@@ -47,7 +47,7 @@ describe('CurrencyProvider', () => {
   });
 
   it('rounds float using specified number of decimal places', () => {
-    let aFloat = 4.32943;
+    let aFloat: number = 4.32943;
 
     expect(currency.roundFloat(aFloat, 2)).toBe(4.33);
     expect(currency.roundFloat(aFloat, 3)).toBe(4.329);
@@ -66,7 +66,7 @@ describe('CurrencyProvider', () => {
   });
 
   it('gets proper conversion after changing currency', () => {
-    let aFloat = 12345.09876543;
+    let aFloat: number = 12345.09876543;
     expect(currency.getConversion(aFloat)).toBe('12345.09876543 BTC');
 
     currency.setCurrency('mBTC');