diff --git a/doc/site/expressions.markdown b/doc/site/expressions.markdown
index 4638be4e..95266160 100644
--- a/doc/site/expressions.markdown
+++ b/doc/site/expressions.markdown
@@ -221,7 +221,7 @@ argument is evaluated and returned:
 
 Also known as the "ternary" operator since it takes three arguments, Wren has
 the little "if statement in the form of an expression" you know and love from C
-and its bretheren.
+and its brethren.
 
     :::dart
     IO.print(1 != 2 ? "math is sane" : "math is not sane!")
diff --git a/doc/site/getting-started.markdown b/doc/site/getting-started.markdown
index 7f984b25..688947c7 100644
--- a/doc/site/getting-started.markdown
+++ b/doc/site/getting-started.markdown
@@ -15,7 +15,7 @@ hack on Wren. That's what I develop in. It builds fine from there but *may* not
 have the exact same build settings. The Makefile is the canonical way to
 compile it.
 
-For our Windows bretheren, there's still a little work to be done. Ideally, the
+For our Windows brethren, there's still a little work to be done. Ideally, the
 repo would include a Visual Studio solution for building Wren. I don't have a
 Windows machine, but if you do, I would be delighted to take a patch for this.