diff --git a/readme.md b/readme.md
index 44489d0..caa55e6 100644
--- a/readme.md
+++ b/readme.md
@@ -405,7 +405,7 @@ Y. Sakemi, Y. Nogami, K. Okeya, Y. Morikawa, CANS 2008.
 
 # History
 
-* 2019/Jan/31 fix crash on x64-CPU without AVX
+* 2019/Jan/31 fix crash on x64-CPU without AVX (thanks to mortdeus)
 
 # Author