diff --git a/CMakeLists.txt b/CMakeLists.txt
index 29448ba..c795240 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ endif()
 
 if(LIBUTP_STANDALONE_BUILD)
     if(NOT CMAKE_C_STANDARD)
-        set(CMAKE_C_STANDARD 99)
+        set(CMAKE_C_STANDARD 11)
         set(CMAKE_C_STANDARD_REQUIRED ON)
         set(CMAKE_C_EXTENSIONS OFF)
     endif()
diff --git a/README.md b/README.md
index a8e20ec..2a6b1ba 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ while maintaining minimum extra delay. It is implemented on top of UDP to be
 cross-platform and functional today. As a result, uTP is the primary transport
 for uTorrent peer-to-peer connections.
 
-uTP is written in C++, but the external interface is strictly C (ANSI C89).
+uTP is written in C++, but the external interface is strictly C (C11 standard).
 
 ## The Interface