diff --git a/README.md b/README.md
index 5c75af2..ddb2d07 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
 # externc-libm
-libm with the required `no_mangle` and `extern "C"` declarations.
+libm with the required `no_mangle` and `extern "C"` declarations for linking under `no_std` environments.