diff --git a/platformio/__main__.py b/platformio/__main__.py
index f1b052f8..4312b422 100644
--- a/platformio/__main__.py
+++ b/platformio/__main__.py
@@ -35,7 +35,7 @@ class PlatformioCLI(MultiCommand):
 
 
 @command(cls=PlatformioCLI)
-@version_option(__version__, prog_name="platformio")
+@version_option(__version__, prog_name="PlatformIO")
 def cli():
     pass