diff --git a/README.md b/README.md
index dfc3b9af..5d147a55 100644
--- a/README.md
+++ b/README.md
@@ -104,7 +104,7 @@ when you are doing a normal `make`.
 
 #### `make pull_submodules` ####
 
-updates the content of the submodules to what is probably the latest upstream code
+updates the content of the submodules to what is probably the latest upstream code.
 
 #### `make pull` ####