diff --git a/src/machine.rs b/src/machine.rs
index 357b01b..5fbc7c1 100644
--- a/src/machine.rs
+++ b/src/machine.rs
@@ -886,6 +886,19 @@ fn branch_if_carry_clear_test() {
     assert_eq!(machine.registers.program_counter, Address(0xABCD));
 }
 
+#[test]
+fn branch_if_carry_set_test() {
+    let mut machine = Machine::new();
+
+    machine.execute_instruction((instruction::CLC, instruction::UseImplied));
+    machine.branch_if_carry_set(Address(0xABCD));
+    assert_eq!(machine.registers.program_counter, Address(0));
+
+    machine.execute_instruction((instruction::SEC, instruction::UseImplied));
+    machine.branch_if_carry_set(Address(0xABCD));
+    assert_eq!(machine.registers.program_counter, Address(0xABCD));
+}
+
 #[test]
 fn branch_if_minus_test() {
     {