diff --git a/app/render/videoparams.cpp b/app/render/videoparams.cpp
index 7ac14904e..58442bcd3 100644
--- a/app/render/videoparams.cpp
+++ b/app/render/videoparams.cpp
@@ -262,7 +262,7 @@ void VideoParams::calculate_effective_size()
 {
   effective_width_ = GetScaledDimension(width(), divider_);
   effective_height_ = GetScaledDimension(height(), divider_);
-  effective_depth_ = GetScaledDimension(depth(), divider_);
+  effective_depth_ = (depth() == 1) ? depth() : GetScaledDimension(depth(), divider_);
   calculate_square_pixel_width();
 }