diff --git a/src/Window.zig b/src/Window.zig
index ec62f89..aff891a 100644
--- a/src/Window.zig
+++ b/src/Window.zig
@@ -221,7 +221,7 @@ pub fn fill(self: Window, cell: Cell) void {
     } else {
         // Non-contiguous. Iterate over rows an memset
         var row: usize = self.y_off;
-        const last_row = @min(self.height + self.y_off, self.screen.height - self.y_off);
+        const last_row = @min(self.height + self.y_off, self.screen.height);
         while (row < last_row) : (row += 1) {
             const start = self.x_off + (row * self.screen.width);
             const end = @min(start + self.width, start + (self.screen.width - self.x_off));