diff --git a/plotview.cpp b/plotview.cpp
index e22a966..67823ee 100644
--- a/plotview.cpp
+++ b/plotview.cpp
@@ -251,6 +251,7 @@ void PlotView::exportSamples(std::shared_ptr<AbstractSampleSource> src)
     QFileDialog dialog(this);
     dialog.setAcceptMode(QFileDialog::AcceptSave);
     dialog.setFileMode(QFileDialog::AnyFile);
+    dialog.setNameFilter(getFileNameFilter<SOURCETYPE>());
     dialog.setOption(QFileDialog::DontUseNativeDialog, true);
 
     QGroupBox groupBox("Selection To Export", &dialog);
diff --git a/util.cpp b/util.cpp
index ac7cacb..66ecd37 100644
--- a/util.cpp
+++ b/util.cpp
@@ -44,3 +44,6 @@ std::string formatSIValue(float value)
     ss << value << prefixes[power];
     return ss.str();
 }
+
+template<> const char* getFileNameFilter<std::complex<float>>() { return "complex<float> file (*.fc32)"; };
+template<> const char* getFileNameFilter<float>() { return "float file (*.f32)"; };
diff --git a/util.h b/util.h
index e04132f..0e22e9d 100644
--- a/util.h
+++ b/util.h
@@ -20,6 +20,7 @@
 
 #pragma once
 #include <algorithm>
+#include <complex>
 #include <map>
 #include <math.h>
 #include <sstream>
@@ -97,3 +98,5 @@ struct range_t {
 };
 
 std::string formatSIValue(float value);
+
+template<typename T> const char* getFileNameFilter();