diff --git a/src/raw/cstr.rs b/src/raw/cstr.rs
index 8db13fcc..e3d221f7 100644
--- a/src/raw/cstr.rs
+++ b/src/raw/cstr.rs
@@ -166,6 +166,12 @@ impl<'a> From<&'a CStr> for &'a str {
     }
 }
 
+impl Default for &CStr {
+    fn default() -> Self {
+        cstr!("")
+    }
+}
+
 #[cfg(feature = "serde")]
 impl serde::Serialize for &CStr {
     fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
@@ -349,6 +355,14 @@ impl std::hash::Hash for CString {
     }
 }
 
+impl Default for CString {
+    fn default() -> Self {
+        Self {
+            data: String::new(),
+        }
+    }
+}
+
 #[cfg(feature = "serde")]
 impl serde::Serialize for CString {
     fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>