diff --git a/lib/copy-dialog.coffee b/lib/copy-dialog.coffee
index aa510d84..9b335d1e 100644
--- a/lib/copy-dialog.coffee
+++ b/lib/copy-dialog.coffee
@@ -23,7 +23,7 @@ class CopyDialog extends Dialog
       @close()
       return
 
-    unless @isNewPathValid(newPath)
+    if fs.existsSync(newPath)
       @showError("'#{newPath}' already exists.")
       return
 
@@ -46,17 +46,3 @@ class CopyDialog extends Dialog
       @close()
     catch error
       @showError("#{error.message}.")
-
-  isNewPathValid: (newPath) ->
-    try
-      oldStat = fs.statSync(@initialPath)
-      newStat = fs.statSync(newPath)
-
-      # New path exists so check if it points to the same file as the initial
-      # path to see if the case of the file name is being changed on a on a
-      # case insensitive filesystem.
-      @initialPath.toLowerCase() is newPath.toLowerCase() and
-        oldStat.dev is newStat.dev and
-        oldStat.ino is newStat.ino
-    catch
-      true # new path does not exist so it is valid
diff --git a/spec/tree-view-package-spec.coffee b/spec/tree-view-package-spec.coffee
index 1af6b5d5..0482db8e 100644
--- a/spec/tree-view-package-spec.coffee
+++ b/spec/tree-view-package-spec.coffee
@@ -7,6 +7,17 @@ os = require 'os'
 Directory = require '../lib/directory'
 eventHelpers = require "./event-helpers"
 
+isCaseSensitive = null
+isFilesystemCaseSensitive = ->
+  if isCaseSensitive is null
+    tempPath = temp.path()
+    fs.writeFileSync(path.join(tempPath, 'case-sensitive-check.txt'), '')
+    isCaseSensitive = true
+    isCaseSensitive = false if fs.existsSync(path.join(tempPath, 'CASE-SENSITIVE-CHECK.txt'))
+    fs.unlinkSync(path.join(tempPath, 'case-sensitive-check.txt'))
+
+  isCaseSensitive
+
 waitForPackageActivation = ->
   waitsForPromise ->
     atom.packages.activatePackage('tree-view')
@@ -2634,6 +2645,22 @@ describe "TreeView", ->
                 expect(copyDialog.element).toHaveClass('error')
                 expect(copyDialog.element.parentElement).toBeTruthy()
 
+          describe "when trying to duplicate a file with the same name but different case", ->
+            it "shows an error message and does not close the dialog", ->
+              runs ->
+                newPath = path.join(dirPath, "TEST-FILE.txt")
+                copyDialog.miniEditor.setText(newPath)
+
+                atom.commands.dispatch copyDialog.element, 'core:confirm'
+
+                if isFilesystemCaseSensitive()
+                  expect(fs.existsSync(newPath)).toBeTruthy()
+                  expect(atom.workspace.getActiveTextEditor().getPath()).toBe(newPath)
+                else
+                  expect(copyDialog.errorMessage.textContent).toContain 'already exists'
+                  expect(copyDialog.element).toHaveClass('error')
+                  expect(copyDialog.element.parentElement).toBeTruthy()
+
         describe "when 'core:cancel' is triggered on the copy dialog", ->
           it "removes the dialog and focuses the tree view", ->
             jasmine.attachToDOM(treeView.element)