diff --git a/Packages/AppWindowUtility/Runtime/Windows/Windows.cs b/Packages/AppWindowUtility/Runtime/Windows/Windows.cs
index 475d68e..ba84178 100644
--- a/Packages/AppWindowUtility/Runtime/Windows/Windows.cs
+++ b/Packages/AppWindowUtility/Runtime/Windows/Windows.cs
@@ -303,37 +303,37 @@ namespace SatorImaging.AppWindowUtility
             if (resizeDirection.x > 0) {
                 if (resizeDirection.y > 0) {
                     width = (int)(rect.right - rect.left + deltaX);
-                    height = (int)(width / aspectRatio);
                 }else if (resizeDirection.y < 0) {
                     width = (int)(rect.right - rect.left + deltaX);
-                    height = (int)(width / aspectRatio);
                 }else {
                     width = (int)(rect.right - rect.left + deltaX);
-                    height = (int)(width / aspectRatio);
                 }
+                width = Mathf.Max(width, 100);
+                height = (int)(width / aspectRatio);
             }else if (resizeDirection.x < 0) {
                 if (resizeDirection.y > 0) {
                     x += (int)deltaX;
                     width = rect.right - x;
-                    height = (int)(width / aspectRatio);
                 }else if (resizeDirection.y < 0) {
                     x += (int)deltaX;
                     width = rect.right - x;
-                    height = (int)(width / aspectRatio);
                 }else {
                     x += (int)deltaX;
                     width = rect.right - x;
-                    height = (int)(width / aspectRatio);
                 }
+                if (width < 100) x -= 100 - width;
+                width = Mathf.Max(width, 100);
+                height = (int)(width / aspectRatio);
             } else {
                 if (resizeDirection.y > 0) {
                     y += (int)deltaY;
                     height = rect.bottom - y;
-                    width = (int)(height * aspectRatio);
                 }else if (resizeDirection.y < 0) {
                     height = (int)(rect.bottom - rect.top + deltaY);
-                    width = (int)(height * aspectRatio);
                 }
+                if (height < 150 && resizeDirection.y > 0) y -= 150 - height;
+                height = Mathf.Max(height, 150);
+                width = (int)(height * aspectRatio);
             }
 
             WinApi.SetWindowPos(hWnd, IntPtr.Zero, x, y, width, height, WinApi.SetWindowPosFlags.NoFlag);