diff --git a/doc/langref.html.in b/doc/langref.html.in
index d8433c5b49..3ed8d9d3ae 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -5295,13 +5295,6 @@ fn cmpxchgWeakButNotAtomic(comptime T: type, ptr: *T, expected_value: T, new_val
       {#see_also|Vectors#}
       {#header_close#}
 
-      {#header_open|@setAlignStack#}
-      <pre>{#syntax#}@setAlignStack(comptime alignment: u29) void{#endsyntax#}</pre>
-      <p>
-      Ensures that a function will have a stack alignment of at least {#syntax#}alignment{#endsyntax#} bytes.
-      </p>
-      {#header_close#}
-
       {#header_open|@setEvalBranchQuota#}
       <pre>{#syntax#}@setEvalBranchQuota(comptime new_quota: u32) void{#endsyntax#}</pre>
       <p>