diff --git a/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/requests/UploadRequest.kt b/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/requests/UploadRequest.kt
index d378ac12..9a7c0c41 100644
--- a/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/requests/UploadRequest.kt
+++ b/STNetwork/src/commonMain/kotlin/com/infomaniak/multiplatform_swisstransfer/network/requests/UploadRequest.kt
@@ -31,6 +31,8 @@ import io.ktor.client.HttpClient
 import io.ktor.client.plugins.onUpload
 import io.ktor.client.request.post
 import io.ktor.client.request.setBody
+import io.ktor.http.ContentType
+import io.ktor.http.contentType
 import io.ktor.http.isSuccess
 import kotlinx.serialization.json.Json
 import kotlinx.serialization.json.JsonObject
@@ -47,6 +49,7 @@ internal class UploadRequest(json: Json, httpClient: HttpClient) : BaseRequest(j
 
     suspend fun resendEmailCode(resendEmailCodeBody: ResendEmailCodeBody): Boolean {
         val httpResponse = httpClient.post(url = createUrl(ApiRoutes.resendEmailCode)) {
+            contentType(ContentType.Application.Json)
             setBody(resendEmailCodeBody)
         }
         return httpResponse.status.isSuccess()
@@ -77,6 +80,7 @@ internal class UploadRequest(json: Json, httpClient: HttpClient) : BaseRequest(j
 
     suspend fun cancelUpload(jsonBody: JsonObject): Boolean {
         val httpResponse = httpClient.post(url = createUrl(ApiRoutes.cancelUpload)) {
+            contentType(ContentType.Application.Json)
             setBody(jsonBody)
         }
         return httpResponse.status.isSuccess()