Index: tests/disposition.test
===================================================================
diff -u -r5c37eb1cd2b674337c60deeef1ecef4b663fa5ce -rfbdde5cf08cdbbbde43f1d5a8ddc836d66dc09f4
--- tests/disposition.test	(.../disposition.test)	(revision 5c37eb1cd2b674337c60deeef1ecef4b663fa5ce)
+++ tests/disposition.test	(.../disposition.test)	(revision fbdde5cf08cdbbbde43f1d5a8ddc836d66dc09f4)
@@ -197,7 +197,7 @@
       "value for parameter '-x' expected"
   ? {[C new -single-np [list -x X]] eval {set :single-np}} \
       "invalid non-positional argument '-x X', valid are : -x;
- should be \"::__%&singleton single-np -x\""
+ should be \"::__%&singleton single-np -x value\""
 
   #
   # INTERACTIONS with other parameter types