diff --git a/crates/debug/src/transform/expression.rs b/crates/debug/src/transform/expression.rs
index c5386d11e4..601be39bf6 100644
--- a/crates/debug/src/transform/expression.rs
+++ b/crates/debug/src/transform/expression.rs
@@ -64,6 +64,10 @@ impl ExpressionWriter {
         write::Writer::write_u8(&mut self.0, b)
     }
 
+    pub fn write_u32(&mut self, b: u32) -> write::Result<()> {
+        write::Writer::write_u32(&mut self.0, b)
+    }
+
     pub fn write_uleb128(&mut self, i: u64) -> write::Result<()> {
         write::Writer::write_uleb128(&mut self.0, i)
     }
@@ -196,8 +200,8 @@ fn append_memory_deref(
     }
     writer.write_op(gimli::constants::DW_OP_deref)?;
     writer.write_op(gimli::constants::DW_OP_swap)?;
-    writer.write_op(gimli::constants::DW_OP_constu)?;
-    writer.write_uleb128(0xffff_ffff)?;
+    writer.write_op(gimli::constants::DW_OP_const4u)?;
+    writer.write_u32(0xffff_ffff)?;
     writer.write_op(gimli::constants::DW_OP_and)?;
     writer.write_op(gimli::constants::DW_OP_plus)?;
     buf.extend(writer.into_vec());