diff --git a/src/Tools/tim_tool/ui/tab/main-tab.slint b/src/Tools/tim_tool/ui/tab/main-tab.slint
index 5ae87712..b6c47e05 100644
--- a/src/Tools/tim_tool/ui/tab/main-tab.slint
+++ b/src/Tools/tim_tool/ui/tab/main-tab.slint
@@ -121,10 +121,20 @@ export component MainTab inherits Rectangle {
                 }
 
                 function update_viewport() {
+                    // If this value is positive, then the image moved so much to the right, that we do not use the full display area anymore
+                    if self.viewport-x > 0 {
+                        self.viewport-x = 0;
+                    }
+
                     if abs(self.viewport-x) + self.width > self.viewport-width {
                         self.viewport-x += (self.width + abs(self.viewport-x)) - self.viewport-width;
                     }
 
+                    if self.viewport-y > 0 {
+                        self.viewport-y = 0;
+                    }
+
+                    // If this value is positive, then the image moved so much down, that we do not use the full display area anymore
                     if abs(self.viewport-y) + self.height > self.viewport-height {
                         self.viewport-y += (self.height + abs(self.viewport-y)) - self.viewport-height;
                     }