diff --git a/lua/neotest-golang/lib/convert.lua b/lua/neotest-golang/lib/convert.lua
index 3184e428..fe6ccfb8 100644
--- a/lua/neotest-golang/lib/convert.lua
+++ b/lua/neotest-golang/lib/convert.lua
@@ -81,6 +81,7 @@ function M.to_lua_pattern(str)
     "=",
     "<",
     ">",
+    "\\",
   }
   for _, character in ipairs(special_characters) do
     str = str:gsub("%" .. character, "%%%" .. character)
diff --git a/lua/neotest-golang/lib/find.lua b/lua/neotest-golang/lib/find.lua
index bd2339cd..5b310902 100644
--- a/lua/neotest-golang/lib/find.lua
+++ b/lua/neotest-golang/lib/find.lua
@@ -6,6 +6,8 @@ local logger = require("neotest-golang.logging")
 
 local M = {}
 
+M.os_path_sep = package.config:sub(1, 1) -- "/" on Unix, "\" on Windows
+
 --- Find a file upwards in the directory tree and return its path, if found.
 --- @param filename string
 --- @param start_path string
@@ -19,7 +21,7 @@ function M.file_upwards(filename, start_path)
   while start_dir ~= home_dir do
     logger.debug("Searching for " .. filename .. " in " .. start_dir)
 
-    local try_path = start_dir .. "/" .. filename
+    local try_path = start_dir .. M.os_path_sep .. filename
     if vim.fn.filereadable(try_path) == 1 then
       logger.debug("Found " .. filename .. " at " .. try_path)
       return try_path
diff --git a/lua/neotest-golang/process.lua b/lua/neotest-golang/process.lua
index 964c4a4e..fbf8444b 100644
--- a/lua/neotest-golang/process.lua
+++ b/lua/neotest-golang/process.lua
@@ -224,10 +224,13 @@ function M.decorate_with_go_package_and_test_name(
           if gotestline.Action == "run" and gotestline.Test ~= nil then
             if gotestline.Package == golistline.ImportPath then
               local pattern = lib.convert.to_lua_pattern(folderpath)
-                .. "/(.-)/"
+                .. lib.find.os_path_sep
+                .. "(.-)"
+                .. "/"
                 .. lib.convert.to_lua_pattern(gotestline.Test)
                 .. "$"
               match = tweaked_pos_id:find(pattern, 1, false)
+
               if match ~= nil then
                 test_data.gotest_data.pkg = gotestline.Package
                 test_data.gotest_data.name = gotestline.Test
diff --git a/lua/neotest-golang/runspec/namespace.lua b/lua/neotest-golang/runspec/namespace.lua
index 3e3efe68..80b9c521 100644
--- a/lua/neotest-golang/runspec/namespace.lua
+++ b/lua/neotest-golang/runspec/namespace.lua
@@ -9,7 +9,8 @@ local M = {}
 --- @return neotest.RunSpec | neotest.RunSpec[] | nil
 function M.build(pos)
   --- @type string
-  local test_folder_absolute_path = string.match(pos.path, "(.+)/")
+  local test_folder_absolute_path =
+    string.match(pos.path, "(.+)" .. lib.find.os_path_sep)
   local golist_data = lib.cmd.golist_data(test_folder_absolute_path)
 
   --- @type string
diff --git a/lua/neotest-golang/runspec/test.lua b/lua/neotest-golang/runspec/test.lua
index eecfd4b1..3bcd3375 100644
--- a/lua/neotest-golang/runspec/test.lua
+++ b/lua/neotest-golang/runspec/test.lua
@@ -2,7 +2,6 @@
 
 local logger = require("neotest-golang.logging")
 local lib = require("neotest-golang.lib")
-local options = require("neotest-golang.options")
 local dap = require("neotest-golang.features.dap")
 
 local M = {}
@@ -13,7 +12,8 @@ local M = {}
 --- @return neotest.RunSpec | neotest.RunSpec[] | nil
 function M.build(pos, strategy)
   --- @type string
-  local test_folder_absolute_path = string.match(pos.path, "(.+)/")
+  local test_folder_absolute_path =
+    string.match(pos.path, "(.+)" .. lib.find.os_path_sep)
   local golist_data = lib.cmd.golist_data(test_folder_absolute_path)
 
   --- @type string