diff --git a/TSPL.docc/ReferenceManual/Expressions.md b/TSPL.docc/ReferenceManual/Expressions.md
index ab58727b0..96b11b9e6 100644
--- a/TSPL.docc/ReferenceManual/Expressions.md
+++ b/TSPL.docc/ReferenceManual/Expressions.md
@@ -61,7 +61,7 @@ as described in <doc:Expressions#Implicit-Conversion-to-a-Pointer-Type>.
 
 > Grammar of an in-out expression:
 >
-> *in-out-expression* → **`&`** *identifier*
+> *in-out-expression* → **`&`** *primary-expression*
 
 ### Try Operator
 
diff --git a/TSPL.docc/ReferenceManual/SummaryOfTheGrammar.md b/TSPL.docc/ReferenceManual/SummaryOfTheGrammar.md
index c177c3d3b..20ecde510 100644
--- a/TSPL.docc/ReferenceManual/SummaryOfTheGrammar.md
+++ b/TSPL.docc/ReferenceManual/SummaryOfTheGrammar.md
@@ -323,7 +323,7 @@ make the same change here also.
 
 > Grammar of an in-out expression:
 >
-> *in-out-expression* → **`&`** *identifier*
+> *in-out-expression* → **`&`** *primary-expression*
 
 > Grammar of a try expression:
 >