diff --git a/doc/langref.html.in b/doc/langref.html.in
index 2916033a5f..d32f8aeede 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -5120,9 +5120,8 @@ fn cmpxchgWeakButNotAtomic(comptime T: type, ptr: *T, expected_value: T, new_val
       <p>{#syntax#}source{#endsyntax#} must be a slice, a pointer to
         an array, or a many-item {#link|pointer|Pointers#}. It may
         have any alignment, and it may have any element type.</p>
-      <p>The {#syntax#}source{#endsyntax#} element type must support {#link|Type Coercion#}
-        into the {#syntax#}dest{#endsyntax#} element type. The element types may have
-        different ABI size, however, that may incur a performance penalty.</p>
+      <p>The {#syntax#}source{#endsyntax#} element type must have the same in-memory
+        representation as the {#syntax#}dest{#endsyntax#} element type.</p>
       <p>Similar to {#link|for#} loops, at least one of {#syntax#}source{#endsyntax#} and
         {#syntax#}dest{#endsyntax#} must provide a length, and if two lengths are provided,
         they must be equal.</p>