diff --git a/wasm/src/backend/translator/data.rs b/wasm/src/backend/translator/data.rs
index 4f376f2..72bb380 100644
--- a/wasm/src/backend/translator/data.rs
+++ b/wasm/src/backend/translator/data.rs
@@ -67,7 +67,7 @@ pub fn gen_expression(code: &[Instruction], w: &mut dyn Write) -> Result<()> {
 		return result;
 	}
 
-	unreachable!();
+	write!(w, "error(\"mundane expression\")")
 }
 
 pub struct Module<'a> {