1 files changed, 1 insertions, 2 deletions
diff --git a/README b/README
index 883b9c8..57bbfc7 100644
--- a/README
+++ b/README
@@ -3,8 +3,7 @@ Purpose of this thorn
 This thorn can be used to calculate different approximations of the ADM mass
 on a finite grid.
 
-Warning: This thorn is still _very_ experimental. Do not expect it to work,
-         especially not the way you might think it should.
+It requires C99 to compile. For gcc, add -std=c99 to the compiler options.
 
 Copyright
 ---------