diff --git a/src/lib.rs b/src/lib.rs
index 247fcd2..6c9c864 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,22 +11,26 @@
 // specific language governing permissions and limitations under
 // each license.
 
-#![deny(warnings)]
+#![deny(clippy::expect_used)]
+#![deny(clippy::panic)]
+#![deny(clippy::unwrap_used)]
 #![deny(missing_docs)]
+#![deny(warnings)]
 #![doc = include_str!("../README.md")]
 
 mod ffi;
-
-#[cfg(test)]
-mod tests;
-
 mod xmp_date_time;
 mod xmp_error;
 mod xmp_file;
 mod xmp_meta;
 pub mod xmp_ns;
 
-pub use xmp_date_time::XmpDateTime;
-pub use xmp_error::{XmpError, XmpErrorType, XmpResult};
-pub use xmp_file::{OpenFileOptions, XmpFile};
-pub use xmp_meta::XmpMeta;
+pub use {
+    xmp_date_time::XmpDateTime,
+    xmp_error::{XmpError, XmpErrorType, XmpResult},
+    xmp_file::{OpenFileOptions, XmpFile},
+    xmp_meta::XmpMeta,
+};
+
+#[cfg(test)]
+mod tests;
diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index a4e5865..689862d 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -14,6 +14,10 @@
 // Tests are grouped under this module so as to avoid
 // having the test code itself included in coverage numbers.
 
+#![allow(clippy::expect_used)]
+#![allow(clippy::panic)]
+#![allow(clippy::unwrap_used)]
+
 mod fixtures;
 mod xmp_date_time;
 mod xmp_error;
diff --git a/src/tests/xmp_meta.rs b/src/tests/xmp_meta.rs
index c46ba64..6bd1a76 100644
--- a/src/tests/xmp_meta.rs
+++ b/src/tests/xmp_meta.rs
@@ -110,6 +110,18 @@ mod property {
         let m = XmpMeta::from_file(fixture_path("Purple Square.psd")).unwrap();
         assert_eq!(m.property(xmp_ns::XMP, ""), None);
     }
+
+    #[test]
+    fn invalid_namespace() {
+        let m = XmpMeta::from_file(fixture_path("Purple Square.psd")).unwrap();
+        assert_eq!(m.property("\0", "CreatorTool"), None);
+    }
+
+    #[test]
+    fn invalid_prop_name() {
+        let m = XmpMeta::from_file(fixture_path("Purple Square.psd")).unwrap();
+        assert_eq!(m.property(xmp_ns::XMP, "\0"), None);
+    }
 }
 
 mod set_property {
diff --git a/src/xmp_meta.rs b/src/xmp_meta.rs
index 0a1cab4..3e82efe 100644
--- a/src/xmp_meta.rs
+++ b/src/xmp_meta.rs
@@ -11,13 +11,14 @@
 // specific language governing permissions and limitations under
 // each license.
 
-use std::{
-    ffi::{CStr, CString},
-    path::Path,
+use {
+    crate::{ffi, OpenFileOptions, XmpDateTime, XmpError, XmpErrorType, XmpFile, XmpResult},
+    std::{
+        ffi::{CStr, CString},
+        path::Path,
+    },
 };
 
-use crate::{ffi, OpenFileOptions, XmpDateTime, XmpError, XmpErrorType, XmpFile, XmpResult};
-
 /// The `XmpMeta` struct allows access to the XMP Toolkit core services.
 ///
 /// You can create `XmpMeta` structs from metadata that you construct,
@@ -124,8 +125,8 @@ impl XmpMeta {
     /// Any errors (for instance, empty or invalid namespace or property name)
     /// are ignored; the function will return `None` in such cases.
     pub fn property(&self, schema_ns: &str, prop_name: &str) -> Option<String> {
-        let c_ns = CString::new(schema_ns).unwrap();
-        let c_name = CString::new(prop_name).unwrap();
+        let c_ns = CString::new(schema_ns).unwrap_or_default();
+        let c_name = CString::new(prop_name).unwrap_or_default();
 
         unsafe {
             let c_result = ffi::CXmpMetaGetProperty(self.m, c_ns.as_ptr(), c_name.as_ptr());