1 files changed, 1 insertions, 0 deletions
diff --git a/README.md b/README.md
index a4ebca3..9963724 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,7 @@ Options:
   -p, --pretend			do not perform write operations.
   -m, --machine-readable	produce machine-readable output.
   -n, --min-value		set minimum brightness, defaults to 1.
+  -e, --exponent[=K]		changes percentage curve to exponential.
   -s, --save			save previous state in a temporary file.
   -r, --restore			restore previous saved state.
   -h, --help			print this help.