diff --git a/eventmodel.cpp b/eventmodel.cpp
index 2c4f0bed4..121222296 100644
--- a/eventmodel.cpp
+++ b/eventmodel.cpp
@@ -1027,6 +1027,21 @@ void EventModel::handleKeyboard(QKeyEvent *event, int VPfound) {
     }
 }
 
+void EventModel::handleKeyRelease(QKeyEvent *event) {
+    if (event->key() == Qt::Key_5) { // switch between compresed and raw
+        static uint originalCompressionRatio;
+        static bool changeToRaw = false;
+        changeToRaw = !changeToRaw;
+        if (changeToRaw) {
+            originalCompressionRatio = state->compressionRatio;
+            state->compressionRatio = 0;
+        } else {
+            state->compressionRatio = originalCompressionRatio;
+        }
+        state->viewer->changeDatasetMag(DATA_SET);
+    }
+}
+
 Coordinate *EventModel::getCoordinateFromOrthogonalClick(QMouseEvent *event, int VPfound) {
 
     Coordinate *foundCoordinate;
diff --git a/eventmodel.h b/eventmodel.h
index 29f005244..cb514ea91 100644
--- a/eventmodel.h
+++ b/eventmodel.h
@@ -63,6 +63,7 @@ class EventModel : public QObject
     void handleMouseReleaseMiddle(QMouseEvent *event, int VPfound);
     void handleMouseWheel(QWheelEvent * const event, int VPfound);
     void handleKeyboard(QKeyEvent *event, int VPfound);
+    void handleKeyRelease(QKeyEvent *event);
     static Coordinate *getCoordinateFromOrthogonalClick(QMouseEvent *event, int VPfound);
 
     void startNodeSelection(int x, int y, int vpId);
diff --git a/widgets/viewport.cpp b/widgets/viewport.cpp
index 4ece86d02..0a9dc9e6e 100644
--- a/widgets/viewport.cpp
+++ b/widgets/viewport.cpp
@@ -444,6 +444,8 @@ void Viewport::keyReleaseEvent(QKeyEvent *event) {
         state->repeatDirection[0] /= 10;
         state->repeatDirection[1] /= 10;
         state->repeatDirection[2] /= 10;
+    } else {
+        eventDelegate->handleKeyRelease(event);
     }
 }