diff --git a/README.en.md b/README.en.md
index 394f9d52ee87f17331de1e4211b7b79857b13dd1..60c477fe897827802759f8ff98f6d928ad3ddd9f 100644
--- a/README.en.md
+++ b/README.en.md
@@ -24,7 +24,7 @@
 - strncat_s
 - wcsncat_s
 - strtok_s
-- cwcstok_s
+- wcstok_s
 - sprintf_s
 - swprintf_s
 - vsprintf_s
diff --git a/README.md b/README.md
index 1e0b3df4e6320828a4187d39780a0b90d68f1d0d..c16cbb17696c74ed845abf0449eadb239e409f6e 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@
 - strncat_s
 - wcsncat_s
 - strtok_s
-- cwcstok_s
+- wcstok_s
 - sprintf_s
 - swprintf_s
 - vsprintf_s