1 files changed, 2 insertions, 1 deletions
diff --git a/README b/README
index 47fb9b8..4539393 100644
--- a/README
+++ b/README
@@ -12,7 +12,8 @@ and as a test).
 # Building
 
 Just run `make` (parallelism does work, so `make -j8` is recommended) to
-build the binary `badroff`.
+build the binary `badroff`. This requires `c99` and `make`, so it should
+work on basically any Unix.
 
 To install, run `sudo make install`