diff --git a/README.md b/README.md
index 47d002f..4ccdbb2 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ Before you say "oh no, another lisp", consider the following: femtolisp is about
   * compacting GC
   * and...
 
-...it is fast, ranking among the fastest non-native-compiled Scheme implementations. It achieves this level of speed even though many primitives (like `map`) are written in the language instead of C. femtolisp uses a bytecode compiler and VM, with the compiler written in femtolisp. Bytecode is first-class, can be printed and read, and is "human readable" (the representation is a string of normal low-ASCII characters).
+...it is fast, ranking among the fastest non-native-compiled Scheme implementations. It achieves this level of speed even though many primitives (e.g. `filter` and `for-each`) are written in the language instead of C. femtolisp uses a bytecode compiler and VM, with the compiler written in femtolisp. Bytecode is first-class, can be printed and read, and is "human readable" (the representation is a string of normal low-ASCII characters).
 
 femtolisp is a simple, elegant Scheme dialect. It is a lisp-1 with lexical scope. The core is 12 builtin special forms and 33 builtin functions.