diff --git a/README.md b/README.md
index 84d00fb..8db7611 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ the standard C math functions and runtime binding of variables.
 
 ## Features
 
-- **ANSI C with no dependencies**.
+- **C99 with no dependencies**.
 - Single source file and header file.
 - Simple and fast.
 - Implements standard operators precedence.