diff --git a/readme.md b/readme.md
index fc3100e2..d2ae048c 100644
--- a/readme.md
+++ b/readme.md
@@ -86,6 +86,7 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
 ### [GLM 0.9.8.4](https://github.com/g-truc/glm/tree/0.9.8) - 201X-XX-XX
 ##### Fixes:
 - Fixed GTC_packing test failing on GCC x86 due to denorms #212 #577
+- Fixed POPCNT optimization build in Clang #512
 
 ---
 ### [GLM 0.9.8.3](https://github.com/g-truc/glm/releases/tag/0.9.8.3) - 2016-11-12