diff --git a/README.md b/README.md
index 2e372c1..8db60c6 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ Just type
 
 This will produce *bin/escape.a2* which is a binary executable for Apple's II PRODOS.
 
-##Prerequisite in order to build:
+## Prerequisite in order to build:
 
 The [cc65 compiler suite](https://github.com/cc65/cc65), with the environment variable *CC65_HOME* set to its folder