diff --git a/plugins/pip/SelectionArea.vala b/plugins/pip/SelectionArea.vala
index 246defe7e..df3740788 100644
--- a/plugins/pip/SelectionArea.vala
+++ b/plugins/pip/SelectionArea.vala
@@ -23,8 +23,8 @@ public class Gala.Plugins.PIP.SelectionArea : CanvasActor {
     public Gala.WindowManager wm { get; construct; }
 
     private Gala.ModalProxy? modal_proxy;
-    private Gdk.Point start_point;
-    private Gdk.Point end_point;
+    private Graphene.Point start_point;
+    private Graphene.Point end_point;
     private bool dragging = false;
     private bool clicked = false;
 
@@ -130,10 +130,10 @@ public class Gala.Plugins.PIP.SelectionArea : CanvasActor {
     }
 
     private void get_selection_rectangle (out int x, out int y, out int width, out int height) {
-        x = int.min (start_point.x, end_point.x);
-        y = int.min (start_point.y, end_point.y);
-        width = (start_point.x - end_point.x).abs ();
-        height = (start_point.y - end_point.y).abs ();
+        x = (int) float.min (start_point.x, end_point.x);
+        y = (int) float.min (start_point.y, end_point.y);
+        width = (int) (start_point.x - end_point.x).abs ();
+        height = (int) (start_point.y - end_point.y).abs ();
     }
 
     protected override void draw (Cairo.Context ctx, int width, int height) {
diff --git a/src/Widgets/MultitaskingView/WindowCloneContainer.vala b/src/Widgets/MultitaskingView/WindowCloneContainer.vala
index 8adac200a..2f23d06da 100644
--- a/src/Widgets/MultitaskingView/WindowCloneContainer.vala
+++ b/src/Widgets/MultitaskingView/WindowCloneContainer.vala
@@ -383,7 +383,7 @@ public class Gala.WindowCloneContainer : ActorTarget {
     // https://projects.kde.org/projects/kde/kde-workspace/repository/revisions/master/entry/kwin/effects/presentwindows/presentwindows.cpp
 
     // some math utilities
-    private static int squared_distance (Gdk.Point a, Gdk.Point b) {
+    private static float squared_distance (Graphene.Point a, Graphene.Point b) {
         var k1 = b.x - a.x;
         var k2 = b.y - a.y;
 
@@ -394,7 +394,7 @@ public class Gala.WindowCloneContainer : ActorTarget {
         return {rect.x + dx1, rect.y + dy1, rect.width + (-dx1 + dx2), rect.height + (-dy1 + dy2)};
     }
 
-    private static Gdk.Point rect_center (Mtk.Rectangle rect) {
+    private static Graphene.Point rect_center (Mtk.Rectangle rect) {
         return {rect.x + rect.width / 2, rect.y + rect.height / 2};
     }
 
@@ -419,7 +419,7 @@ public class Gala.WindowCloneContainer : ActorTarget {
         taken_slots.resize (rows * columns);
 
         // precalculate all slot centers
-        Gdk.Point[] slot_centers = {};
+        Graphene.Point[] slot_centers = {};
         slot_centers.resize (rows * columns);
         for (int x = 0; x < columns; x++) {
             for (int y = 0; y < rows; y++) {
@@ -437,7 +437,7 @@ public class Gala.WindowCloneContainer : ActorTarget {
             var rect = window.rect;
 
             var slot_candidate = -1;
-            var slot_candidate_distance = int.MAX;
+            var slot_candidate_distance = float.MAX;
             var pos = rect_center (rect);
 
             // all slots
@@ -510,8 +510,8 @@ public class Gala.WindowCloneContainer : ActorTarget {
             if (scale > 1.0) {
                 scale = 1.0f;
                 target = {
-                    rect_center (target).x - (int) Math.floorf (rect.width * scale) / 2,
-                    rect_center (target).y - (int) Math.floorf (rect.height * scale) / 2,
+                    (int) (rect_center (target).x - Math.floorf (rect.width * scale) / 2),
+                    (int) (rect_center (target).y - Math.floorf (rect.height * scale) / 2),
                     (int) Math.floorf (scale * rect.width),
                     (int) Math.floorf (scale * rect.height)
                 };