diff --git a/generateAll.sh b/generateAll.sh
index f3626a1..da7e10a 100755
--- a/generateAll.sh
+++ b/generateAll.sh
@@ -98,7 +98,9 @@ if [ "$STAGE2" = "1" ]; then
 
   echo "fix root redirect in index.html"
   sed -i output/src/$PACKAGE_NAME/wwwroot/index.html \
-      -e 's#openapi#'$ROUTE_PREFIX'/api/doc#'
+      -e 's#./openapi#/'$ROUTE_PREFIX'/api/doc#'
+  mkdir -p output/src/$PACKAGE_NAME/wwwroot/$ROUTE_PREFIX
+  cp output/src/$PACKAGE_NAME/wwwroot/index.html output/src/$PACKAGE_NAME/wwwroot/$ROUTE_PREFIX
 
   echo "disable documentation warnings in generated code"
   sed -i output/src/$PACKAGE_NAME/$PACKAGE_NAME.csproj \