diff --git a/R/lsp_add_spatial.R b/R/lsp_add_spatial.R
index 4553883..638b752 100644
--- a/R/lsp_add_spatial.R
+++ b/R/lsp_add_spatial.R
@@ -58,6 +58,9 @@ lsp_add_stars.default = function(x = NULL, window = NULL){
   }
 
   if (is.numeric(window) && window != 0){
+    if (inherits(x, "SpatRaster")){
+      x = stars::st_as_stars(x)
+    }
     x_crs = sf::st_crs(x)
     x_bb = sf::st_bbox(x)
     x_delta_row = stars::st_dimensions(x)[[1]][["delta"]]
@@ -203,7 +206,7 @@ lsp_add_terra = function(x = NULL, window = NULL){
   if (!requireNamespace("terra", quietly = TRUE)){
     stop("package terra required, please install it first") # nocov
   }
-  output = lsp_add_stars(x = stars::st_as_stars(x), window = window)
+  output = lsp_add_stars(x = x, window = window)
   output_names = names(output)
   output = terra::rast(output)
   names(output) = output_names