diff --git a/emulator/src/emulator/system/processor/tests.rs b/emulator/src/emulator/system/processor/tests.rs
index c9ca424..37c9d0f 100644
--- a/emulator/src/emulator/system/processor/tests.rs
+++ b/emulator/src/emulator/system/processor/tests.rs
@@ -464,7 +464,7 @@ fn test_shift_left_with_shamt() {
     let shl_instr = Instruction::ShiftLeft(RTypeArgs::new(
         Some(Register::Rg1),
         Some(Register::Zero),
-        None,
+        Some(Register::Rg1),
         Some(2),
     ));
 
@@ -485,7 +485,7 @@ fn test_shift_right_with_shamt() {
     let shr_instr = Instruction::ShiftRight(RTypeArgs::new(
         Some(Register::Rg1),
         Some(Register::Zero),
-        None,
+        Some(Register::Rg1),
         Some(2),
     ));