diff --git a/zsh/alias b/zsh/alias
index 25a71d9..73330f6 100644
--- a/zsh/alias
+++ b/zsh/alias
@@ -64,6 +64,12 @@ alias random32="echo $(date +%s | md5sum | head -c 32)"
 alias targz='tar -czvf'
 alias untargz='tar -xzvf'
 
+# (macOS) start Firefox Profile manager
+if test -x "/Applications/Firefox.app/Contents/MacOS/firefox-bin"; then
+	alias firefox-pm='/Applications/Firefox.app/Contents/MacOS/firefox-bin -P'
+fi
+
+
 # linux stuff
 alias journ='journalctl -xfe -t'