diff --git a/wrphttp/errors.go b/wrphttp/errors.go
index 5b52f22..ecbd9ff 100644
--- a/wrphttp/errors.go
+++ b/wrphttp/errors.go
@@ -16,6 +16,8 @@
 
 package wrphttp
 
+import "errors"
+
 type httpError struct {
 	err  error
 	code int
@@ -28,3 +30,8 @@ func (e httpError) Error() string {
 func (e httpError) StatusCode() int {
 	return e.code
 }
+
+// Is reports whether any error in e.err's chain matches target.
+func (e httpError) Is(target error) bool {
+	return errors.Is(e.err, target)
+}
diff --git a/wrphttp/handler_test.go b/wrphttp/handler_test.go
index c79a44d..a5256aa 100644
--- a/wrphttp/handler_test.go
+++ b/wrphttp/handler_test.go
@@ -20,6 +20,7 @@ package wrphttp
 import (
 	"context"
 	"errors"
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"strconv"
@@ -201,8 +202,9 @@ func testWRPHandlerDecodeError(t *testing.T) {
 		assert  = assert.New(t)
 		require = require.New(t)
 
-		expectedCtx = context.WithValue(context.Background(), foo, "bar")
-		expectedErr = errors.New("expected")
+		expectedCtx            = context.WithValue(context.Background(), foo, "bar")
+		expectedErr            = errors.New("expected")
+		expectedHTTPStatusCode = http.StatusBadRequest
 
 		decoder = func(actualCtx context.Context, httpRequest *http.Request) (*Entity, error) {
 			assert.Equal(expectedCtx, actualCtx)
@@ -213,7 +215,16 @@ func testWRPHandlerDecodeError(t *testing.T) {
 		errorEncoder       = func(actualCtx context.Context, actualErr error, _ http.ResponseWriter) {
 			errorEncoderCalled = true
 			assert.Equal(expectedCtx, actualCtx)
-			assert.Equal(expectedErr, actualErr)
+			assert.ErrorIs(actualErr, expectedErr,
+				fmt.Errorf("error [%v] doesn't contain error [%v] in its err chain",
+					actualErr, expectedErr))
+
+			var actualErrorHTTP httpError
+			if assert.ErrorAs(actualErr, &actualErrorHTTP,
+				fmt.Errorf("error [%v] doesn't contain error [%v] in its err chain",
+					actualErr, actualErrorHTTP)) {
+				assert.Equal(expectedHTTPStatusCode, actualErrorHTTP.StatusCode())
+			}
 		}
 
 		wrpHandler  = new(MockHandler)