diff --git a/docs/ReleaseNotes.md b/docs/ReleaseNotes.md
index 8e1e8b4080f153a442a2d19299cf83268f9bce60..ee2ae51af373fd628ce3ce1f372d53a4de5f5734 100644
--- a/docs/ReleaseNotes.md
+++ b/docs/ReleaseNotes.md
@@ -6,7 +6,7 @@ Changes in Libmongoose library:
 
 - Added new API function: `mg_forward()` for proxying functionality
 - Added new API function: `mg_send_file_data()` for sending file data
-- Added new utility API functions: `mg_mmap() and mg_munpap()`
+- Added new utility API functions: `mg_mmap() and mg_munmap()`
 - Changed the way SSL settings are handled: removed `ssl_certificate` and
   `ssl_ca_certificate` options, and instead made `listening_port` accept
   `ssl://PORT:SSL_CERT:CA_CERT` notation