diff --git a/wxPython/distrib/mac/wxPythonOSX/build b/wxPython/distrib/mac/wxPythonOSX/build
index 62b695ffa3..0d7a8153a5 100755
--- a/wxPython/distrib/mac/wxPythonOSX/build
+++ b/wxPython/distrib/mac/wxPythonOSX/build
@@ -182,6 +182,9 @@ mkdir -p $DMGROOT
 mkdir -p $DMGAPPS/Docs
 mkdir -p $DMGAPPS/Samples
 
+if [ ! -d $DESTDIR ]; then
+  mkdir $DESTDIR
+fi
 
 pushd $BUILDROOT
 
@@ -470,7 +473,7 @@ EOF
     $PROGDIR/../makedmg $DMGROOT $DMGDIR $dmgname
 
     echo Moving $DMGDIR/$dmgname.dmg to $DESTDIR
-    mv $DMGDIR/$dmgname.dmg  $DESTDIR
+    mv $DMGDIR/$dmgname.dmg  $DESTDIR/$dmgname.dmg
 
 
 #---------------------------------------------------------------------------
@@ -626,7 +629,7 @@ EOF
     $PROGDIR/../makedmg $DMGAPPS $DMGDIR $dmgname
 
     echo Moving $DMGDIR/$dmgname.dmg to $DESTDIR
-    mv $DMGDIR/$dmgname.dmg  $DESTDIR
+    mv $DMGDIR/$dmgname.dmg  $DESTDIR/$dmgname.dmg
 fi