diff --git a/src/avrdude.conf.in b/src/avrdude.conf.in
index d2514a7a..81e1dac4 100644
--- a/src/avrdude.conf.in
+++ b/src/avrdude.conf.in
@@ -193,10 +193,10 @@
 #   ;
 #
 # If any of the above parameters are not specified, the default value
-# of 0 is used for numerics (except for mcuid, hvupdi_variant and
-# ocdrev, where the default value is -1, and for autobaud_sync which
-# defaults to 0x30), or the empty string "" for string values. If a
-# required parameter is left empty, AVRDUDE will complain. Almost all
+# of 0 is used for numerics (except for mcuid, hvupdi_variant, ocdrev
+# and bitmask, where the default value is -1, and for autobaud_sync
+# which defaults to 0x30), or the empty string "" for string values. If
+# a required parameter is left empty, AVRDUDE will complain. Almost all
 # occurrences of numbers (with the exception of pin numbers and where
 # they are separated by space, eg, in signature and readback) can also
 # be given as simple expressions involving arithemtic and bitwise
diff --git a/src/doc/avrdude.texi b/src/doc/avrdude.texi
index d86ca64a..0cabaf6b 100644
--- a/src/doc/avrdude.texi
+++ b/src/doc/avrdude.texi
@@ -2835,13 +2835,14 @@ part
 
 @noindent
 If any of the above parameters are not specified, the default value of 0
-is used for numerics (except for @code{mcuid}, @code{hvupdi_variant} and
-@code{ocdrev}, where the default value is -1, and for @code{autobaud_sync}
-which defaults to 0x30) or the empty string @code{""} for string values.
-If a required parameter is left empty, AVRDUDE will complain. Almost all
-occurrences of numbers (with the exception of pin numbers and where they
-are separated by space, e.g., in signature and readback) can also be given
-as simple expressions involving arithemtic and bitwise operators.
+is used for numerics (except for @code{mcuid}, @code{hvupdi_variant},
+@code{ocdrev} and @code{bitmask}, where the default value is -1, and for
+@code{autobaud_sync} which defaults to 0x30) or the empty string @code{""}
+for string values. If a required parameter is left empty, AVRDUDE will
+complain. Almost all occurrences of numbers (with the exception of pin
+numbers and where they are separated by space, e.g., in signature and
+readback) can also be given as simple expressions involving arithemtic and
+bitwise operators.
 
 @menu
 * Parent Part::