diff --git a/doc/makepanda/makepanda.py b/doc/makepanda/makepanda.py
index 0608215a80..14dd061596 100755
--- a/doc/makepanda/makepanda.py
+++ b/doc/makepanda/makepanda.py
@@ -3625,10 +3625,10 @@ def MakeInstallerOSX():
           if ((base != "extensions") and (base != "extensions_native")):
               compileall.compile_dir("Panda3D-tpl-rw/Panda3D/"+VERSION+"/lib/direct/src/"+base)
       compileall.compile_dir("Panda3D-tpl-rw/Panda3D/"+VERSION+"/lib/Pmw")
-      oscmd("chmod -R 555 Panda3D-tpl-rw/Panda3D/"+VERSION+"/samples")
       oscmd("chmod -R 555 Panda3D-tpl-rw/Panda3D/"+VERSION+"/lib/direct")
       oscmd("chmod -R 555 Panda3D-tpl-rw/Panda3D/"+VERSION+"/lib/pandac")
-      oscmd("chmod -R 555 Panda3D-tpl-rw/Panda3D/"+VERSION+"/lib/Pmw")
+      if os.path.isdir("samples"):   oscmd("chmod -R 555 Panda3D-tpl-rw/Panda3D/"+VERSION+"/samples")
+      if os.path.isdir("built/Pmw"): oscmd("chmod -R 555 Panda3D-tpl-rw/Panda3D/"+VERSION+"/lib/Pmw")
     except: # Make sure the dmg gets unmounted even when error occurs
       oscmd("hdiutil detach Panda3D-tpl-rw -quiet -force")
       oscmd("rm -f Panda3D-tpl-rw.dmg")