diff --git a/src/openmc_geometry_plot/app.py b/src/openmc_geometry_plot/app.py
index fc054b0..1fafe46 100644
--- a/src/openmc_geometry_plot/app.py
+++ b/src/openmc_geometry_plot/app.py
@@ -167,7 +167,7 @@ def main():
         )
         backend = st.sidebar.selectbox(
             label="Ploting backend",
-            options=("plotly", "matplotlib"),
+            options=("matplotlib", "plotly"),
             index=0,
             key="geometry_plotting_backend",
             help="Create png images with MatPlotLib or HTML plots with Plotly",