diff --git a/examples/test.lua b/examples/test.lua
index 0cc0e9f..cf6e804 100644
--- a/examples/test.lua
+++ b/examples/test.lua
@@ -21,4 +21,4 @@ print(add(10)(15))
 print(add(10)(15))
 print(b)
 print(min(11, 9))
-print(10 > 5 or 11 < 10)
\ No newline at end of file
+print(10 - 15)
\ No newline at end of file
diff --git a/src/compile.rs b/src/compile.rs
index cfda0ef..f50a66f 100644
--- a/src/compile.rs
+++ b/src/compile.rs
@@ -351,9 +351,8 @@ impl Expression {
                         ));
                     }
                     BinaryOperator::Sub => {
-                        let temp = scope.register_counter.next();
-                        instructions.push(Instruction::Unm(temp, *rhs.get(0).unwrap()));
-                        instructions.push(Instruction::Add(reg, *lhs.get(0).unwrap(), temp));
+                        instructions.push(Instruction::Unm(reg, *rhs.get(0).unwrap()));
+                        instructions.push(Instruction::Add(reg, *lhs.get(0).unwrap(), reg));
                     }
                     BinaryOperator::And => {
                         instructions.push(Instruction::And(
diff --git a/src/vm.rs b/src/vm.rs
index ccd551e..4089b7e 100644
--- a/src/vm.rs
+++ b/src/vm.rs
@@ -154,7 +154,7 @@ impl Value {
         match self {
             Value::Number(lhs) => {
                 let res = -LuaNumber::from_bits(*lhs);
-                Value::Number((res as u64 as f64).to_bits())
+                Value::Number(res.to_bits())
             }
             _ => Value::Nil,
         }