diff --git a/Source/Fractorium/DoubleSpinBox.cpp b/Source/Fractorium/DoubleSpinBox.cpp
index 28d1d31..adff3d5 100644
--- a/Source/Fractorium/DoubleSpinBox.cpp
+++ b/Source/Fractorium/DoubleSpinBox.cpp
@@ -310,6 +310,13 @@ void DoubleSpinBox::keyPressEvent(QKeyEvent* ke)
 
 		ke->accept();
 	}
+	else if (ke->key() == Qt::Key_Space)
+	{
+		if (IsClose(m_DoubleClickLowVal, value()))
+			setValue(m_DoubleClickZero);
+		else
+			setValue(m_DoubleClickNonZero);
+	}
 	else
 		QDoubleSpinBox::keyPressEvent(ke);
 }
diff --git a/Source/Fractorium/SpinBox.cpp b/Source/Fractorium/SpinBox.cpp
index 31d6fb1..754d121 100644
--- a/Source/Fractorium/SpinBox.cpp
+++ b/Source/Fractorium/SpinBox.cpp
@@ -306,6 +306,19 @@ void SpinBox::keyPressEvent(QKeyEvent* ke)
 
 		ke->accept();
 	}
+	else if (ke->key() == Qt::Key_Space)
+	{
+		if (m_DoubleClickLowVal == value())
+		{
+			m_DoubleClickZeroEvent(this, m_DoubleClickZero);
+			setValue(m_DoubleClickZero);
+		}
+		else
+		{
+			m_DoubleClickNonZeroEvent(this, m_DoubleClickNonZero);
+			setValue(m_DoubleClickNonZero);
+		}
+	}
 	else
 		QSpinBox::keyPressEvent(ke);
 }