diff --git a/source/exec.tex b/source/exec.tex
index df7ca5439e..e0ea26a24c 100644
--- a/source/exec.tex
+++ b/source/exec.tex
@@ -724,7 +724,7 @@
 
 namespace std::execution {
   // \ref{exec.par.scheduler}, parallel scheduler
-  class @\libglobal{parallel_scheduler}@ { @\unspec@ };
+  class @\libglobal{parallel_scheduler}@;
   parallel_scheduler get_parallel_scheduler();
 }
 
@@ -8278,6 +8278,14 @@
 
 \rSec1[exec.par.scheduler]{Parallel scheduler}
 
+\begin{codeblock}
+namespace std::execution {
+  class @\libglobal{parallel_scheduler}@ {
+    @\unspec@
+  };
+}
+\end{codeblock}
+
 \pnum
 \tcode{parallel_scheduler} models \libconcept{scheduler}.