diff --git a/stdlib/src/word.rs b/stdlib/src/word.rs
index a19e9528..5e04745e 100644
--- a/stdlib/src/word.rs
+++ b/stdlib/src/word.rs
@@ -19,3 +19,22 @@ impl StdlibRegistry {
         );
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_register_word() {
+        let mut registry = StdlibRegistry::new();
+        registry.register_word();
+
+        let module = registry
+            .get_module("std.word")
+            .expect("Module std.word should be registered");
+        assert_eq!(module.name, "std.word");
+        assert_eq!(module.version, "1.0.0");
+        assert!(module.exports.is_empty());
+        assert!(module.required_capabilities.is_empty());
+    }
+}