diff --git a/PARAM/GEN/gbeam.param b/PARAM/GEN/gbeam.param
index 330cf1a8736dad11dbc39862d36489aede49191d..49d2b4edd1d8d2da46cf01bab90052c8509a4f9e 100644
--- a/PARAM/GEN/gbeam.param
+++ b/PARAM/GEN/gbeam.param
@@ -1,12 +1,9 @@
 ;                    BPM calibration constants
 ;                    =========================
 
-;From Dave Gaskell's survey
-;gbpm_x_off = -0.284, -0.288, -0.326
-;gbpm_y_off = -0.021, -0.020, -0.0045
 
 ; average beam positions:
-; Use the Hall C EPICS BPM values
+; Use the Hall C EPICS BPM values in units of cm
   gbeam_x = +0.00
   gbeam_xp = +0.00
   gbeam_y  = +0.00