diff --git a/README.md b/README.md
index c997f6c..4f0e994 100644
--- a/README.md
+++ b/README.md
@@ -11,8 +11,8 @@ the deployed release uses static linkage.
 -akl                 using Akl-Toussaint heuristic beforehand
                      https://en.wikipedia.org/wiki/Convex_hull_algorithms#Akl%E2%8
 -f <filename>        read random numbers from file
--rngCount <count>    generates count random float values
--rngMode <mode>      if generating float values this specifies the mode:
+-rngcount <count>    generates count random float values
+-rngmode <mode>      if generating float values this specifies the mode:
                      1. random numbers in screen range
                      2. numbers are ordered as rectangle
                      3. numbers are ordered as circle around screen center