diff --git a/internal/manager/api_impl/jobs.go b/internal/manager/api_impl/jobs.go
index fb6916e9..5005f21d 100644
--- a/internal/manager/api_impl/jobs.go
+++ b/internal/manager/api_impl/jobs.go
@@ -153,7 +153,7 @@ func (f *Flamenco) SetJobStatus(e echo.Context, jobID string) error {
 		logger.Error().Err(err).Msg("error changing job status")
 		return sendAPIError(e, http.StatusInternalServerError, "unexpected error changing job status")
 	}
-	return e.String(http.StatusNoContent, "")
+	return e.NoContent(http.StatusNoContent)
 }
 
 func (f *Flamenco) TaskUpdate(e echo.Context, taskID string) error {
@@ -199,7 +199,7 @@ func (f *Flamenco) TaskUpdate(e echo.Context, taskID string) error {
 		return sendAPIError(e, http.StatusInternalServerError, "unable to handle status update: %v", err)
 	}
 
-	return e.String(http.StatusNoContent, "")
+	return e.NoContent(http.StatusNoContent)
 }
 
 func (f *Flamenco) doTaskUpdate(
diff --git a/internal/manager/api_impl/workers.go b/internal/manager/api_impl/workers.go
index 64138ce9..79b8e18a 100644
--- a/internal/manager/api_impl/workers.go
+++ b/internal/manager/api_impl/workers.go
@@ -156,7 +156,7 @@ func (f *Flamenco) SignOff(e echo.Context) error {
 		return sendAPIError(e, http.StatusInternalServerError, "error re-queueing your tasks")
 	}
 
-	return e.String(http.StatusNoContent, "")
+	return e.NoContent(http.StatusNoContent)
 }
 
 // workerRequeueActiveTasks re-queues all active tasks (should be max one) of this worker.
@@ -190,7 +190,7 @@ func (f *Flamenco) WorkerState(e echo.Context) error {
 	worker := requestWorkerOrPanic(e)
 
 	if worker.StatusRequested == "" {
-		return e.String(http.StatusNoContent, "")
+		return e.NoContent(http.StatusNoContent)
 	}
 
 	return e.JSON(http.StatusOK, api.WorkerStateChange{
@@ -236,7 +236,7 @@ func (f *Flamenco) WorkerStateChanged(e echo.Context) error {
 		return sendAPIError(e, http.StatusInternalServerError, "error storing worker in database")
 	}
 
-	return e.String(http.StatusNoContent, "")
+	return e.NoContent(http.StatusNoContent)
 }
 
 func (f *Flamenco) ScheduleTask(e echo.Context) error {
@@ -275,7 +275,7 @@ func (f *Flamenco) ScheduleTask(e echo.Context) error {
 		return sendAPIError(e, http.StatusInternalServerError, "internal error finding a task for you: %v", err)
 	}
 	if dbTask == nil {
-		return e.String(http.StatusNoContent, "")
+		return e.NoContent(http.StatusNoContent)
 	}
 
 	// Convert database objects to API objects: