diff --git a/graphics/src/main/java/de/staropensource/sosengine/graphics/classes/Window.java b/graphics/src/main/java/de/staropensource/sosengine/graphics/classes/Window.java
index db3511d0..54d67748 100644
--- a/graphics/src/main/java/de/staropensource/sosengine/graphics/classes/Window.java
+++ b/graphics/src/main/java/de/staropensource/sosengine/graphics/classes/Window.java
@@ -205,17 +205,23 @@ public abstract class Window {
 
     /**
      * Determines the minimum size of this window.
+     * <p>
+     * If set to {@code -1}, will enforce no minimum window size.
      *
      * @since v1-alpha1
      *
      * -- GETTER --
      * Returns the minimum window size.
+     * <p>
+     * If set to {@code -1}, will enforce no minimum window size.
      *
      * @return minimum window size
      * @since v1-alpha2
      *
      * -- SETTER --
      * Sets the minimum window size.
+     * <p>
+     * If set to {@code -1}, will enforce no minimum window size.
      *
      * @param size new minimum window size
      * @since v1-alpha2
@@ -226,17 +232,23 @@ public abstract class Window {
 
     /**
      * Determines the maximum size of this window.
+     * <p>
+     * If set to {@code -1}, will enforce no maximum window size.
      *
      * @since v1-alpha1
      *
      * -- GETTER --
      * Returns the maximum window size.
+     * <p>
+     * If set to {@code -1}, will enforce no maximum window size.
      *
      * @return maximum window size
      * @since v1-alpha2
      *
      * -- SETTER --
      * Sets the maximum window size.
+     * <p>
+     * If set to {@code -1}, will enforce no maximum window size.
      *
      * @param size new maximum window size
      * @since v1-alpha2
@@ -869,9 +881,9 @@ public abstract class Window {
 
             // Set defaults
             if (minimumSize == null)
-                minimumSize = new Vec2i(0, 0);
+                minimumSize = new Vec2i(-1, -1);
             if (maximumSize == null)
-                maximumSize = new Vec2i(0, 0);
+                maximumSize = new Vec2i(-1, -1);
             if (windowMode == null)
                 windowMode = WindowMode.WINDOWED;
             if (vsyncMode == null)