diff --git a/autotests/test_gestures.cpp b/autotests/test_gestures.cpp
index 9768d54ba5..1833efc598 100644
--- a/autotests/test_gestures.cpp
+++ b/autotests/test_gestures.cpp
@@ -316,7 +316,7 @@ void GestureTest::testSetMinimumDelta()
 
     PinchGesture pinchGesture;
     QCOMPARE(pinchGesture.isMinimumScaleDeltaRelevant(), false);
-    QCOMPARE(pinchGesture.minimumScaleDelta(), DEFAULT_MINIMUM_SCALE_DELTA);
+    QCOMPARE(pinchGesture.minimumScaleDelta(), DEFAULT_UNIT_SCALE_DELTA);
     QCOMPARE(pinchGesture.minimumScaleDeltaReached(1.25), true);
     pinchGesture.setMinimumScaleDelta(.5);
     QCOMPARE(pinchGesture.isMinimumScaleDeltaRelevant(), true);
diff --git a/src/gestures.h b/src/gestures.h
index e17421fabc..3e1167b2f0 100644
--- a/src/gestures.h
+++ b/src/gestures.h
@@ -19,7 +19,12 @@
 
 namespace KWin
 {
-static const qreal DEFAULT_MINIMUM_SCALE_DELTA = .2; // 20%
+/*
+ * Everytime the scale of the gesture changes by this much, the callback changes by 1.
+ * This is the amount of change for 1 unit of change, like switch by 1 desktop.
+ * */
+static const qreal DEFAULT_UNIT_SCALE_DELTA = .2; // 20%
+
 class Gesture : public QObject
 {
     Q_OBJECT
@@ -166,7 +171,7 @@ private:
     uint m_maximumFingerCount = 0;
     Direction m_direction = Direction::Expanding;
     bool m_minimumScaleDeltaRelevant = false;
-    qreal m_minimumScaleDelta = DEFAULT_MINIMUM_SCALE_DELTA;
+    qreal m_minimumScaleDelta = DEFAULT_UNIT_SCALE_DELTA;
 };
 
 class KWIN_EXPORT GestureRecognizer : public QObject