diff --git a/libmproxy/cmdline.py b/libmproxy/cmdline.py
index e45cc54c2..2b8ca7cf4 100644
--- a/libmproxy/cmdline.py
+++ b/libmproxy/cmdline.py
@@ -571,6 +571,7 @@ def mitmproxy():
     parser.add_argument(
         "--palette", type=str, default="dark",
         action="store", dest="palette",
+        choices=sorted(palettes.palettes.keys()),
         help="Select color palette: " + ", ".join(palettes.palettes.keys())
     )
     parser.add_argument(
@@ -662,4 +663,3 @@ def mitmweb():
         help="Intercept filter expression."
     )
     return parser
-
diff --git a/release/osx-binaries b/release/osx-binaries
index c2d9902bd..3cfe0913b 100755
--- a/release/osx-binaries
+++ b/release/osx-binaries
@@ -56,7 +56,7 @@ $PYINST_CMD ./release/mitmweb.spec
 echo "Running mitmweb..."
 ./dist/mitmweb --version || exit 1
 
-exit DST=osx-mitmproxy-`./dist/mitmdump --shortversion 2>&1`
+DST=osx-mitmproxy-`./dist/mitmdump --shortversion 2>&1`
 mkdir -p $TMPDIR/$DST
 cp ./dist/mitmproxy $TMPDIR/$DST
 cp ./dist/mitmdump $TMPDIR/$DST