diff --git a/test/constructor.ts b/test/constructor.ts
index 71287d3..70fc146 100644
--- a/test/constructor.ts
+++ b/test/constructor.ts
@@ -35,6 +35,10 @@ test('accept `amount` of type `string`', t => {
 	t.is(cashify.convert('12', {from: 'USD', to: 'GBP'}), 9.857142857142856);
 });
 
+test('`amount` equals 0', t => {
+	t.is(cashify.convert(0, {from: 'USD', to: 'GBP'}), 0);
+});
+
 test('basic parsing (integer)', t => {
 	t.is(cashify.convert('$12 USD', {to: 'GBP'}), 9.857142857142856);
 });
diff --git a/test/function.ts b/test/function.ts
index 84c33d7..3c23944 100644
--- a/test/function.ts
+++ b/test/function.ts
@@ -31,6 +31,10 @@ test('accept `amount` of type `string`', t => {
 	t.is(convert('12', {from: 'USD', to: 'GBP', base: 'EUR', rates}), 9.857142857142856);
 });
 
+test('`amount` equals 0', t => {
+	t.is(convert(0, {from: 'USD', to: 'GBP', base: 'EUR', rates}), 0);
+});
+
 test('basic parsing (integer)', t => {
 	t.is(convert('$12 USD', {to: 'GBP', base: 'EUR', rates}), 9.857142857142856);
 });