diff --git a/docs/projectconf.rst b/docs/projectconf.rst
index 4dcfa645..151c549f 100644
--- a/docs/projectconf.rst
+++ b/docs/projectconf.rst
@@ -25,7 +25,7 @@ Options
 ``home_dir``
 ^^^^^^^^^^^^
 
-A PlatformIO's home directory that is used to store platforms tools chain,
+A *PlatformIO*'s home directory that is used to store platforms tools chain,
 frameworks, libraries, service data and etc.