diff --git a/spectrogram.cpp b/spectrogram.cpp
index f9d524e..eed6d44 100644
--- a/spectrogram.cpp
+++ b/spectrogram.cpp
@@ -20,6 +20,10 @@ Spectrogram::~Spectrogram()
 	delete inputSource;
 }
 
+QSize Spectrogram::sizeHint() const {
+	return QSize(1024, 2048);
+}
+
 void Spectrogram::pickFile()
 {
 	QString fileName = QFileDialog::getOpenFileName(
diff --git a/spectrogram.h b/spectrogram.h
index 70e4ea1..6d8584b 100644
--- a/spectrogram.h
+++ b/spectrogram.h
@@ -9,6 +9,7 @@ class Spectrogram : public QWidget {
 public:
 	Spectrogram();
 	~Spectrogram();
+	QSize sizeHint() const;
 
 public slots:
 	void pickFile();