diff --git a/xxxApp/src/iocxxxLinuxInclude.dbd b/xxxApp/src/iocxxxLinuxInclude.dbd
index 58b0e6a6778bbc8ed7dfb7423b210cbe7f11c6ec..2285f7b484e560e646c07f49209093357c055212 100644
--- a/xxxApp/src/iocxxxLinuxInclude.dbd
+++ b/xxxApp/src/iocxxxLinuxInclude.dbd
@@ -4,6 +4,6 @@ include "xxxCommonInclude.dbd"
 # support uncomment the following line
 # (Support build is commented out of mca/mcaApp/CanberraSrc/Makefile)
 #include "mcaCanberraSupport.dbd"
-# If you want to build parallel port interface to Saturn DXP uncomment the following line
+# If you want to build parallel port or USB interfaces to Saturn DXP uncomment the following line
 include "dxpSupport.dbd"
 
diff --git a/xxxApp/src/iocxxxWin32Include.dbd b/xxxApp/src/iocxxxWin32Include.dbd
index 3d47aaf5b49a749d161c5cf3f7bd12721a70400e..346ef93d1193e0f6ce3bf1028c308e46a9102563 100644
--- a/xxxApp/src/iocxxxWin32Include.dbd
+++ b/xxxApp/src/iocxxxWin32Include.dbd
@@ -4,6 +4,6 @@ include "xxxCommonInclude.dbd"
 # If your host supports libpcap and libnet and you want to build Canberra network
 # support uncomment the following line
 #include "mcaCanberraSupport.dbd"
-# If you want to build parallel port interface to Saturn DXP uncomment the following line
+# If you want to build parallel port or USB interfaces to Saturn and/or xMAP DXP
+# then uncomment the following line
 include "dxpSupport.dbd"
-