diff --git a/bip/src/bp.rs b/bip/src/bp.rs
index 310dd00..f21bce0 100644
--- a/bip/src/bp.rs
+++ b/bip/src/bp.rs
@@ -118,7 +118,7 @@ impl Writer {
         let c = c as i64;
         let width = width_sign!(c) as u8;
 
-        self.write_op(Op::Const(width, true));
+        self.write_op(Op::Const(width, false));
         self.buf
             .write_int::<LE>(c, (4 * (width + 1)) as usize)
             .map_err(Error::BadWrite)