diff --git a/lib/fluxsource/hardwarefluxsource.cc b/lib/fluxsource/hardwarefluxsource.cc
index 57cdcd3e..f1e1dc2f 100644
--- a/lib/fluxsource/hardwarefluxsource.cc
+++ b/lib/fluxsource/hardwarefluxsource.cc
@@ -53,7 +53,6 @@ class HardwareFluxSource : public FluxSource
         Bytes crunched = usbRead(side, synced, revolutions * _oneRevolution);
         auto fluxmap = std::make_unique<Fluxmap>();
         fluxmap->appendBytes(crunched.uncrunch());
-        std::cerr << "return fluxmap\n";
         return fluxmap;
     }