diff --git a/source/basic.tex b/source/basic.tex
index c1e655f8bf..732be2bdac 100644
--- a/source/basic.tex
+++ b/source/basic.tex
@@ -2108,8 +2108,8 @@
 \indextext{lookup!argument-dependent}
 
 \pnum
-When the \grammarterm{postfix-expression} in
-a function call\iref{expr.call} is an \grammarterm{unqualified-id},
+When the \grammarterm{postfix-expression} in a function call\iref{expr.call}
+is an (unparenthesized) \grammarterm{unqualified-id},
 and unqualified lookup\iref{basic.lookup.unqual}
 for the name in the \grammarterm{unqualified-id} does not find any
 \begin{itemize}