diff --git a/src/error.rs b/src/error.rs
new file mode 100644
index 0000000..d89d096
--- /dev/null
+++ b/src/error.rs
@@ -0,0 +1,45 @@
+use std::{error, fmt};
+
+use axum_core::response::IntoResponse;
+use http::{header::InvalidHeaderValue, StatusCode};
+
+#[derive(Debug)]
+pub enum HxError {
+    InvalidHeaderValue(InvalidHeaderValue),
+
+    #[cfg(feature = "serde")]
+    #[cfg_attr(feature = "unstable", doc(cfg(feature = "serde")))]
+    Json(serde_json::Error),
+}
+
+impl From<InvalidHeaderValue> for HxError {
+    fn from(value: InvalidHeaderValue) -> Self {
+        Self::InvalidHeaderValue(value)
+    }
+}
+
+#[cfg(feature = "serde")]
+#[cfg_attr(feature = "unstable", doc(cfg(feature = "serde")))]
+impl From<serde_json::Error> for HxError {
+    fn from(value: serde_json::Error) -> Self {
+        Self::Json(value)
+    }
+}
+
+impl fmt::Display for HxError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            HxError::InvalidHeaderValue(err) => write!(f, "Invalid header value: {err}"),
+            #[cfg(feature = "serde")]
+            HxError::Json(err) => write!(f, "Json: {err}"),
+        }
+    }
+}
+
+impl error::Error for HxError {}
+
+impl IntoResponse for HxError {
+    fn into_response(self) -> axum_core::response::Response {
+        (StatusCode::INTERNAL_SERVER_ERROR, self.to_string()).into_response()
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index a57fa29..439ff68 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,6 +2,9 @@
 #![doc = include_str!("../README.md")]
 #![forbid(unsafe_code)]
 
+mod error;
+pub use error::*;
+
 pub mod extractors;
 #[cfg(feature = "guards")]
 #[cfg_attr(feature = "unstable", doc(cfg(feature = "guards")))]
diff --git a/src/responders.rs b/src/responders.rs
index 20a6160..fdc06e4 100644
--- a/src/responders.rs
+++ b/src/responders.rs
@@ -2,10 +2,10 @@
 
 use std::{convert::Infallible, str::FromStr};
 
-use axum_core::response::{IntoResponse, IntoResponseParts, ResponseParts};
-use http::{header::InvalidHeaderValue, HeaderValue, StatusCode, Uri};
+use axum_core::response::{IntoResponseParts, ResponseParts};
+use http::{HeaderValue, Uri};
 
-use crate::headers;
+use crate::{headers, HxError};
 
 mod location;
 pub use location::*;
@@ -309,43 +309,3 @@ impl From<SwapOption> for HeaderValue {
         }
     }
 }
-
-#[derive(Debug)]
-pub enum HxError {
-    InvalidHeaderValue(InvalidHeaderValue),
-
-    #[cfg(feature = "serde")]
-    #[cfg_attr(feature = "unstable", doc(cfg(feature = "serde")))]
-    Json(serde_json::Error),
-}
-
-impl From<InvalidHeaderValue> for HxError {
-    fn from(value: InvalidHeaderValue) -> Self {
-        Self::InvalidHeaderValue(value)
-    }
-}
-
-#[cfg(feature = "serde")]
-#[cfg_attr(feature = "unstable", doc(cfg(feature = "serde")))]
-impl From<serde_json::Error> for HxError {
-    fn from(value: serde_json::Error) -> Self {
-        Self::Json(value)
-    }
-}
-
-impl IntoResponse for HxError {
-    fn into_response(self) -> axum_core::response::Response {
-        match self {
-            Self::InvalidHeaderValue(_) => {
-                (StatusCode::INTERNAL_SERVER_ERROR, "invalid header value").into_response()
-            }
-
-            #[cfg(feature = "serde")]
-            Self::Json(_) => (
-                StatusCode::INTERNAL_SERVER_ERROR,
-                "failed to serialize event",
-            )
-                .into_response(),
-        }
-    }
-}