diff --git a/README.md b/README.md
index 53a17d1..05122fc 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ A tutorial on how to build a SMA using the SMALL library is available here:
 
 to do
 
-If you build a prototype by using the SMALL library, let me know  ;): sekisushai@gmail.com
+If you build a prototype by using the SMALL library, let me know :-) sekisushai@gmail.com
 
 # SMA signal processing
 To encode the microphones signals onto Spherical Harmonics signals (i.e. Ambisonics signals), one can use ambitools.