diff --git a/crates/unicorn-sys/src/lib.rs b/crates/unicorn-sys/src/lib.rs
index 3733f81..b1de4a3 100644
--- a/crates/unicorn-sys/src/lib.rs
+++ b/crates/unicorn-sys/src/lib.rs
@@ -94,7 +94,7 @@ impl TryFrom<i32> for Mode {
         if (v & !VALID_MODES) != 0 {
             return Err(uc_error::MODE);
         }
-        Ok(Self(v as u32))
+        Ok(Self(v.try_into().map_err(|_| uc_error::MODE)?))
     }
 }