diff --git a/docker/emscripten/Dockerfile b/docker/emscripten/Dockerfile
index 40c17cce..fcfab66f 100644
--- a/docker/emscripten/Dockerfile
+++ b/docker/emscripten/Dockerfile
@@ -35,7 +35,7 @@ RUN emcmake cmake -S . -B build -DISLE_BUILD_CONFIG=OFF -DISLE_DEBUG=OFF -DCMAKE
     emmake cmake --build build -j 32
 
 RUN echo "Fetching isle.pizza frontend..."; \
-    git clone --depth 1 https://github.com/isledecomp/isle.pizza /tmp/isle.pizza;
+    git clone --depth 1 -b legacy https://github.com/isledecomp/isle.pizza /tmp/isle.pizza;
 
 FROM openresty/openresty:alpine