diff --git a/Material/Tutorials/sml/introduction.md b/Material/Tutorials/sml/introduction.md
index c0b206f..c5f038a 100644
--- a/Material/Tutorials/sml/introduction.md
+++ b/Material/Tutorials/sml/introduction.md
@@ -263,7 +263,7 @@ Conventional precedence (parenthesis can be dropped without change of meaning)
 
 <!--vert-->
 
-#### int infix operators
+#### real infix operators
 `+` `-` `*` `/`
 
  * Note that `+`, `-`, `*` are overloaded