diff --git a/nerfstudio/viewer/server/viewer_utils.py b/nerfstudio/viewer/server/viewer_utils.py
index 1a3fefd51..93dc908b6 100644
--- a/nerfstudio/viewer/server/viewer_utils.py
+++ b/nerfstudio/viewer/server/viewer_utils.py
@@ -826,7 +826,7 @@ class ViewerState:
         else:
             image_height = (num_vis_rays / aspect_ratio) ** 0.5
             image_height = int(round(image_height, -1))
-            image_height = min(self.max_resolution, image_height)
+            image_height = max(min(self.max_resolution, image_height), 30)
         image_width = int(image_height * aspect_ratio)
         if image_width > self.max_resolution:
             image_width = self.max_resolution