diff --git a/src/main/java/net/javahippie/fitpub/service/KomootImportService.java b/src/main/java/net/javahippie/fitpub/service/KomootImportService.java
index b57f1c4..7f92073 100644
--- a/src/main/java/net/javahippie/fitpub/service/KomootImportService.java
+++ b/src/main/java/net/javahippie/fitpub/service/KomootImportService.java
@@ -320,14 +320,17 @@ public class KomootImportService {
 
         for (URI candidateUri : candidateUris) {
             try {
-                ResponseEntity<byte[]> response = restTemplate.exchange(
+                byte[] body = restTemplate.execute(
                         candidateUri,
                         HttpMethod.GET,
-                        httpEntity,
-                        byte[].class
+                        request -> request.getHeaders().putAll(httpEntity.getHeaders()),
+                        response -> {
+                            if (response.getBody() == null) {
+                                return null;
+                            }
+                            return response.getBody().readAllBytes();
+                        }
                 );
-
-                byte[] body = response.getBody();
                 if (body == null || body.length == 0) {
                     throw new IllegalStateException("Komoot returned an empty GPX response.");
                 }
diff --git a/src/test/java/net/javahippie/fitpub/service/KomootImportServiceTest.java b/src/test/java/net/javahippie/fitpub/service/KomootImportServiceTest.java
index dd32fea..37d43d7 100644
--- a/src/test/java/net/javahippie/fitpub/service/KomootImportServiceTest.java
+++ b/src/test/java/net/javahippie/fitpub/service/KomootImportServiceTest.java
@@ -270,6 +270,7 @@ class KomootImportServiceTest {
         server.expect(once(), requestTo("https://www.komoot.com/api/v007/tours/2880957035.gpx"))
                 .andExpect(method(HttpMethod.GET))
                 .andExpect(header(HttpHeaders.AUTHORIZATION, authHeader))
+                .andExpect(header(HttpHeaders.ACCEPT, "application/gpx+xml, application/xml, text/xml"))
                 .andRespond(withSuccess("""
                         <?xml version="1.0" encoding="UTF-8"?>
                         <gpx version="1.1" creator="komoot">
@@ -359,6 +360,7 @@ class KomootImportServiceTest {
         server.expect(once(), requestTo("https://www.komoot.com/api/v007/tours/2880957036.gpx"))
                 .andExpect(method(HttpMethod.GET))
                 .andExpect(header(HttpHeaders.AUTHORIZATION, authHeader))
+                .andExpect(header(HttpHeaders.ACCEPT, "application/gpx+xml, application/xml, text/xml"))
                 .andRespond(withSuccess("""
                         <?xml version="1.0" encoding="UTF-8"?>
                         <gpx version="1.1" creator="komoot">