diff --git a/dust-lang/src/parser.rs b/dust-lang/src/parser.rs
index 2990b18..1b86c34 100644
--- a/dust-lang/src/parser.rs
+++ b/dust-lang/src/parser.rs
@@ -695,9 +695,10 @@ impl<'src> Parser<'src> {
 
             self.emit_instruction(previous_instruction, previous_position);
             self.emit_instruction(
-                Instruction::set_local(previous_instruction.a(), local_index),
+                Instruction::set_local(self.current_register, local_index),
                 start_position,
             );
+            self.increment_register()?;
 
             self.parsed_expression = false;
         } else {
diff --git a/dust-lang/tests/expressions.rs b/dust-lang/tests/expressions.rs
index f04868e..5632359 100644
--- a/dust-lang/tests/expressions.rs
+++ b/dust-lang/tests/expressions.rs
@@ -818,7 +818,7 @@ fn set_local() {
                 (Instruction::define_local(0, 0, true), Span(8, 9)),
                 (Instruction::load_constant(1, 1, false), Span(20, 22)),
                 (Instruction::set_local(1, 0), Span(16, 17)),
-                (Instruction::get_local(1, 0), Span(24, 25)),
+                (Instruction::get_local(2, 0), Span(24, 25)),
                 (Instruction::r#return(true), Span(25, 25)),
             ],
             vec![Value::integer(41), Value::integer(42)],