diff --git a/resources/qml/SaveButton.qml b/resources/qml/SaveButton.qml
index 0e0eec7277..86339b6795 100644
--- a/resources/qml/SaveButton.qml
+++ b/resources/qml/SaveButton.qml
@@ -48,14 +48,15 @@ Item {
     }
 
     function sliceOrStopSlicing() {
-        try {
-            if ([1, 5].indexOf(base.backendState) != -1) {
-                CuraApplication.backend.forceSlice();
-            } else {
-                CuraApplication.backend.stopSlicing();
-            }
-        } catch (e) {
-            console.log('Could not start or stop slicing', e)
+        if ( [ 1, 5 ].indexOf( base.backendState ) != -1 )
+        {
+            prepareButton.preparingToSlice = true;
+            CuraApplication.backend.forceSlice();
+        }
+        else
+        {
+            prepareButton.preparingToSlice = false;
+            CuraApplication.backend.stopSlicing();
         }
     }
 
@@ -167,10 +168,10 @@ Item {
         // Prepare button, only shows if auto_slice is off
         Button {
             id: prepareButton
-
+            property bool preparingToSlice: false
             tooltip: [1, 5].indexOf(base.backendState) != -1 ? catalog.i18nc("@info:tooltip","Slice current printjob") : catalog.i18nc("@info:tooltip","Cancel slicing process")
             // 1 = not started, 2 = Processing
-            enabled: base.backendState != "undefined" && ([1, 2].indexOf(base.backendState) != -1) && base.activity
+            enabled: !preparingToSlice && base.backendState != "undefined" && ([1, 2].indexOf(base.backendState) != -1) && base.activity
             visible: base.backendState != "undefined" && !autoSlice && ([1, 2, 4].indexOf(base.backendState) != -1) && base.activity
             property bool autoSlice
             height: UM.Theme.getSize("save_button_save_to_button").height
@@ -180,7 +181,23 @@ Item {
             anchors.rightMargin: UM.Theme.getSize("sidebar_margin").width
 
             // 1 = not started, 4 = error, 5 = disabled
-            text: [1, 4, 5].indexOf(base.backendState) != -1 ? catalog.i18nc("@label:Printjob", "Prepare") : catalog.i18nc("@label:Printjob", "Cancel")
+            text: {
+                if ( preparingToSlice )
+                {
+                    return catalog.i18nc("@label:Printjob", "Preparing");
+                }
+                else
+                {
+                    if ( [ 1, 4, 5 ].indexOf( base.backendState ) != -1 )
+                    {
+                        return catalog.i18nc("@label:Printjob", "Prepare");
+                    }
+                    else
+                    {
+                        return catalog.i18nc("@label:Printjob", "Cancel")
+                    }
+                }
+            }
             onClicked:
             {
                 sliceOrStopSlicing();
@@ -237,6 +254,18 @@ Item {
                 }
                 label: Item { }
             }
+
+            Connections {
+                target: UM.Backend
+                onStateChanged:
+                {
+                    if ( [ 2, 3 ].indexOf( UM.Backend.state) != -1 )
+                    {
+                        prepareButton.preparingToSlice = false;
+                    }
+
+                }
+            }
         }
 
         Button {