diff --git a/mint/20/cinnamon/install.sh b/mint/20/cinnamon/install.sh
index 886251f..5f8579b 100644
--- a/mint/20/cinnamon/install.sh
+++ b/mint/20/cinnamon/install.sh
@@ -44,7 +44,7 @@ systemctl stop xrdp-sesman
 
 # Configure the installed XRDP ini files.
 # use vsock transport.
-sed -i_orig -e 's/port=3389/port=vsock://-1:3389/g' /etc/xrdp/xrdp.ini
+sed -i_orig -e 's/port=3389/port=vsock:\/\/-1:3389/g' /etc/xrdp/xrdp.ini
 # use rdp security.
 sed -i_orig -e 's/security_layer=negotiate/security_layer=rdp/g' /etc/xrdp/xrdp.ini
 # remove encryption validation.