--- OpenCL/OpenCL.pm	2012/05/05 16:52:17	1.85
+++ OpenCL/OpenCL.pm	2012/05/07 01:00:31	1.86
@@ -401,7 +401,9 @@
 All C<CL_xxx> constants that this module supports are always available
 in the C<OpenCL> namespace as C<OpenCL::xxx> (i.e. without the C<CL_>
 prefix). Constants which are not defined in the header files used during
-compilation, or otherwise are not available, will have the value C<-1>.
+compilation, or otherwise are not available, will have the value C<0> (in
+some cases, this will make them indistinguishable from real constants,
+sorry).
 
 The latest version of this module knows and exports the constants
 listed in L<http://cvs.schmorp.de/OpenCL/constiv.h>.