diff --git a/source/utilities.tex b/source/utilities.tex
index da1f90c259..9752134df6 100644
--- a/source/utilities.tex
+++ b/source/utilities.tex
@@ -12116,7 +12116,7 @@
 
   virtual ~monotonic_buffer_resource();
 
-  monotonic_buffer_resource
+  monotonic_buffer_resource&
     operator=(const monotonic_buffer_resource&) = delete;
 
   void release();