diff --git a/usr/99-calibration.conf-mhs35 b/usr/99-calibration.conf-mhs35
index 7f85eb0..2df34e2 100644
--- a/usr/99-calibration.conf-mhs35
+++ b/usr/99-calibration.conf-mhs35
@@ -3,4 +3,7 @@ Section "InputClass"
         MatchProduct    "ADS7846 Touchscreen"
         Option  "Calibration"   "3936 227 268 3880"
         Option  "SwapAxes"      "1"
+        Option "EmulateThirdButton" "1"
+        Option "EmulateThirdButtonTimeout" "1000"
+        Option "EmulateThirdButtonMoveThreshold" "300"
 EndSection