diff --git a/lua/harpoon/ui.lua b/lua/harpoon/ui.lua
index 42ef515..db880b7 100644
--- a/lua/harpoon/ui.lua
+++ b/lua/harpoon/ui.lua
@@ -164,7 +164,11 @@ function M.nav_file(id)
     end
 
     local mark = Marked.get_marked_file(idx)
-    local buf_id = vim.fn.bufnr(vim.api.cwd() .. "/" .. mark.filename, true)
+    local filename = mark.filename
+    if filename:sub(1, 1) ~= "/" then
+        filename = vim.loop.cwd() .. "/" .. mark.filename
+    end
+    local buf_id = vim.fn.bufnr(filename, true)
     local set_row = not vim.api.nvim_buf_is_loaded(buf_id)
 
     vim.api.nvim_set_current_buf(buf_id)