1 files changed, 9 insertions, 1 deletions

diff --git a/enigma-swing/src/main/java/cuchaz/enigma/gui/config/UiConfig.java b/enigma-swing/src/main/java/cuchaz/enigma/gui/config/UiConfig.java
index 828da116..bfa2f389 100644
--- a/enigma-swing/src/main/java/cuchaz/enigma/gui/config/UiConfig.java
+++ b/enigma-swing/src/main/java/cuchaz/enigma/gui/config/UiConfig.java
@@ -258,7 +258,15 @@ public final class UiConfig {
                 OptionalInt x = section.getInt(String.format("X %s", screenSize.width));
                 OptionalInt y = section.getInt(String.format("Y %s", screenSize.height));
                 if (x.isPresent() && y.isPresent()) {
-                        return new Point(x.getAsInt(), y.getAsInt());
+                        int ix = x.getAsInt();
+                        int iy = y.getAsInt();
+
+                        // Ensure that the position is on the screen.
+                        if (ix < 0 || iy < 0 || ix > screenSize.width || iy > screenSize.height) {
+                                return fallback;
+                        }
+
+                        return new Point(ix, iy);
                 } else {
                         return fallback;
                 }