diff --git a/pkg/middlewares/compress/brotli/brotli.go b/pkg/middlewares/compress/brotli/brotli.go
index 17225f252..27802b0f6 100644
--- a/pkg/middlewares/compress/brotli/brotli.go
+++ b/pkg/middlewares/compress/brotli/brotli.go
@@ -160,6 +160,7 @@ func (r *responseWriter) Write(p []byte) (int, error) {
 			}
 			if !found {
 				r.compressionDisabled = true
+				r.rw.WriteHeader(r.statusCode)
 				return r.rw.Write(p)
 			}
 		}
@@ -167,6 +168,7 @@ func (r *responseWriter) Write(p []byte) (int, error) {
 		for _, excludedContentType := range r.excludedContentTypes {
 			if excludedContentType.equals(mediaType, params) {
 				r.compressionDisabled = true
+				r.rw.WriteHeader(r.statusCode)
 				return r.rw.Write(p)
 			}
 		}
diff --git a/pkg/middlewares/compress/brotli/brotli_test.go b/pkg/middlewares/compress/brotli/brotli_test.go
index 005587411..67c794c46 100644
--- a/pkg/middlewares/compress/brotli/brotli_test.go
+++ b/pkg/middlewares/compress/brotli/brotli_test.go
@@ -356,7 +356,7 @@ func Test_ExcludedContentTypes(t *testing.T) {
 			h := mustNewWrapper(t, cfg)(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
 				rw.Header().Set(contentType, test.contentType)
 
-				rw.WriteHeader(http.StatusOK)
+				rw.WriteHeader(http.StatusAccepted)
 
 				_, err := rw.Write(bigTestBody)
 				require.NoError(t, err)
@@ -368,7 +368,7 @@ func Test_ExcludedContentTypes(t *testing.T) {
 			rw := httptest.NewRecorder()
 			h.ServeHTTP(rw, req)
 
-			assert.Equal(t, http.StatusOK, rw.Code)
+			assert.Equal(t, http.StatusAccepted, rw.Code)
 
 			if test.expCompression {
 				assert.Equal(t, "br", rw.Header().Get(contentEncoding))
@@ -460,7 +460,7 @@ func Test_IncludedContentTypes(t *testing.T) {
 			h := mustNewWrapper(t, cfg)(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
 				rw.Header().Set(contentType, test.contentType)
 
-				rw.WriteHeader(http.StatusOK)
+				rw.WriteHeader(http.StatusAccepted)
 
 				_, err := rw.Write(bigTestBody)
 				require.NoError(t, err)
@@ -472,7 +472,7 @@ func Test_IncludedContentTypes(t *testing.T) {
 			rw := httptest.NewRecorder()
 			h.ServeHTTP(rw, req)
 
-			assert.Equal(t, http.StatusOK, rw.Code)
+			assert.Equal(t, http.StatusAccepted, rw.Code)
 
 			if test.expCompression {
 				assert.Equal(t, "br", rw.Header().Get(contentEncoding))