diff --git a/source/exec.tex b/source/exec.tex
index 3afe163649..dd42e5c72b 100644
--- a/source/exec.tex
+++ b/source/exec.tex
@@ -1247,7 +1247,7 @@
 \tcode{set_error} is an error completion function\iref{exec.async.ops}.
 Its associated completion tag is \tcode{set_error_t}.
 The expression \tcode{set_error(rcvr, err)}
-for some \tcode{subexpressions} \tcode{rcvr} and \tcode{err} is ill-formed
+for some subexpressions \tcode{rcvr} and \tcode{err} is ill-formed
 if \tcode{rcvr} is an lvalue or an rvalue of const type.
 Otherwise, it is expression-equivalent to
 \tcode{\exposid{MANDATE-NOTHROW}(rcvr.set_error(err))}.