diff --git a/R/app_server.R b/R/app_server.R
index 0d40265c..425e7e0b 100644
--- a/R/app_server.R
+++ b/R/app_server.R
@@ -1488,7 +1488,7 @@ app_server <- function(input, output, session) {
                 clusters = rownames(static_layer_external_tstat())
             ),
             reference_colors = get_colors(
-                libd_layer_colors,
+                spatialLIBD::libd_layer_colors,
                 clusters = colnames(static_layer_external_tstat())
             )
         )