diff --git a/src/PIL/ImageShow.py b/src/PIL/ImageShow.py
index bbd841db77c..db5c0ecfe24 100644
--- a/src/PIL/ImageShow.py
+++ b/src/PIL/ImageShow.py
@@ -125,7 +125,7 @@ class MacViewer(Viewer):
         def get_command(self, file, **options):
             # on darwin open returns immediately resulting in the temp
             # file removal while app is opening
-            command = "open -a /Applications/Preview.app"
+            command = "open -a Preview.app"
             command = "(%s %s; sleep 20; rm -f %s)&" % (command, quote(file),
                                                         quote(file))
             return command
@@ -138,7 +138,7 @@ def show_file(self, file, **options):
             with open(path, "r") as f:
                 subprocess.Popen([
                     'im=$(cat);'
-                    'open -a /Applications/Preview.app $im;'
+                    'open -a Preview.app $im;'
                     'sleep 20;'
                     'rm -f $im'
                 ], shell=True, stdin=f)