diff --git a/README.md b/README.md
index 2a2fdea..40430a6 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ commands:
 options:
   -5, --15-bit     15-bit color
   -6, --16-bit     16-bit color
-  -n, --no-dither  Do not dither the image
+  -n, --no-dither  do not dither the image
 ```
 
 ## Building
diff --git a/cli.c b/cli.c
index 7970e54..a829192 100644
--- a/cli.c
+++ b/cli.c
@@ -380,7 +380,7 @@ void help()
         "\noptions:\n"
         "  -5, --15-bit     15-bit color\n"
         "  -6, --16-bit     16-bit color\n"
-        "  -n, --no-dither  Do not dither the image\n"
+        "  -n, --no-dither  do not dither the image\n"
     );
 }