diff --git a/lib/resolveGitRepo.js b/lib/resolveGitRepo.js
index fbd28ce63..33e5e36c7 100644
--- a/lib/resolveGitRepo.js
+++ b/lib/resolveGitRepo.js
@@ -15,7 +15,7 @@ const debugLog = debug('lint-staged:resolveGitRepo')
  */
 const resolveGitConfigDir = async (gitDir) => {
   // Get the real path in case it's a symlink
-  const defaultDir = normalizePath(await fs.realpath(path.join(gitDir, '.git')))
+  const defaultDir = await fs.realpath(path.join(gitDir, '.git'))
   const stats = await fs.lstat(defaultDir)
   // If .git is a directory, use it
   if (stats.isDirectory()) return defaultDir
@@ -33,10 +33,10 @@ export const determineGitDir = (cwd, relativeDir) => {
   }
   if (relativeDir) {
     // the current working dir is inside the git top-level directory
-    return normalizePath(cwd.substring(0, cwd.lastIndexOf(relativeDir)))
+    return cwd.substring(0, cwd.lastIndexOf(relativeDir))
   } else {
     // the current working dir is the top-level git directory
-    return normalizePath(cwd)
+    return cwd
   }
 }
 
@@ -56,7 +56,7 @@ export const resolveGitRepo = async (cwd = process.cwd()) => {
     // read the path of the current directory relative to the top-level directory
     // don't read the toplevel directly, it will lead to an posix conform path on non posix systems (cygwin)
     const gitRel = normalizePath(await execGit(['rev-parse', '--show-prefix'], { cwd }))
-    const gitDir = determineGitDir(normalizePath(cwd), gitRel)
+    const gitDir = normalizePath(determineGitDir(normalizePath(cwd), gitRel))
     const gitConfigDir = normalizePath(await resolveGitConfigDir(gitDir))
 
     debugLog('Resolved git directory to be `%s`', gitDir)
diff --git a/test/unit/resolveGitRepo.spec.js b/test/unit/resolveGitRepo.spec.js
index ecee89c26..9f63d0835 100644
--- a/test/unit/resolveGitRepo.spec.js
+++ b/test/unit/resolveGitRepo.spec.js
@@ -53,21 +53,21 @@ describe('resolveGitRepo', () => {
       const cwd = process.cwd()
       const relativeDir = undefined
       const rootDir = determineGitDir(cwd, relativeDir)
-      expect(rootDir).toEqual(normalizePath(cwd))
+      expect(normalizePath(rootDir)).toEqual(normalizePath(cwd))
     })
 
     it('should resolve to parent dir when relative dir is child', () => {
       const relativeDir = 'bar'
       const cwd = process.cwd() + path.sep + 'bar'
       const rootDir = determineGitDir(cwd, relativeDir)
-      expect(rootDir).toEqual(normalizePath(process.cwd()))
+      expect(normalizePath(rootDir)).toEqual(normalizePath(process.cwd()))
     })
 
     it('should resolve to parent dir when relative dir is child and child has trailing dir separator', () => {
       const relativeDir = 'bar' + path.sep
       const cwd = process.cwd() + path.sep + 'bar'
       const rootDir = determineGitDir(cwd, relativeDir)
-      expect(rootDir).toEqual(normalizePath(process.cwd()))
+      expect(normalizePath(rootDir)).toEqual(normalizePath(process.cwd()))
     })
   })
 })