diff --git a/data/core/init.lua b/data/core/init.lua
index 0fe7569..ae93c02 100644
--- a/data/core/init.lua
+++ b/data/core/init.lua
@@ -126,7 +126,7 @@ function core.init()
 
   -- write project dir to log file
   -- create userdir first
-  system.exec(string.format("mkdir -p %q", USERDIR))
+  os.execute(string.format("mkdir -p %q", USERDIR))
   local d = io.open(USERDIR .. '/last_dir', "w")
   if not d then error("Error creating user file\n") end
   d:write(tostring(system.absolute_path(project_dir)))