diff --git a/lune/rojo/roblox_sync_config_generator.luau b/lune/rojo/roblox_sync_config_generator.luau
index 30cfe38..63e41ba 100644
--- a/lune/rojo/roblox_sync_config_generator.luau
+++ b/lune/rojo/roblox_sync_config_generator.luau
@@ -2,13 +2,17 @@ local process = require("@lune/process")
 local fs = require("@lune/fs")
 local serde = require("@lune/serde")
 
-local package_directory = process.cwd
+local package_directory = process.args[1]
 
 local output = {
 	tree = {},
 }
 
-for _, file in process.args do
+for i, file in process.args do
+	if i == 1 then
+		continue
+	end
+
 	local name = string.gsub(file, ".luau?$", "")
 
 	if name == "init" then
diff --git a/lune/rojo/sourcemap_generator.luau b/lune/rojo/sourcemap_generator.luau
index 1951e9d..a4c6a79 100644
--- a/lune/rojo/sourcemap_generator.luau
+++ b/lune/rojo/sourcemap_generator.luau
@@ -1,3 +1,12 @@
 local process = require("@lune/process")
+local fs = require("@lune/fs")
+local stdio = require("@lune/stdio")
 
-process.spawn("rojo", { "sourcemap" }, { cwd = process.cwd, stdio = "forward" })
+local project_path = process.args[1]
+
+if fs.isFile(project_path .. "/default.project.json") then
+	process.spawn("rojo", { "sourcemap", project_path }, { cwd = process.cwd, stdio = "forward" })
+else
+	-- use stderr to avoid this being parsed as the output of the sourcemap command
+	stdio.ewrite("no default.project.json found in " .. project_path)
+end