diff --git a/plotview.cpp b/plotview.cpp
index d1727e3..a36c66b 100644
--- a/plotview.cpp
+++ b/plotview.cpp
@@ -295,6 +295,7 @@ void PlotView::exportSamples(std::shared_ptr<AbstractSampleSource> src)
 
     QGroupBox groupBox2("Decimation");
     QSpinBox decimation(&groupBox2);
+    decimation.setMinimum(1);
     decimation.setValue(1 / sampleSrc->relativeBandwidth());
 
     QVBoxLayout vbox2;