diff --git a/src/mynteye/api/synthetic.cc b/src/mynteye/api/synthetic.cc
index 26c8947..d5d9dbe 100644
--- a/src/mynteye/api/synthetic.cc
+++ b/src/mynteye/api/synthetic.cc
@@ -86,6 +86,7 @@ Synthetic::Synthetic(API *api, CalibrationModel calib_model)
 
 Synthetic::~Synthetic() {
   VLOG(2) << __func__;
+  processors_.clear();
   if (processor_) {
     processor_->Deactivate(true);
     processor_ = nullptr;