diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d06f5569bcd..896ca5732d2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2019-06-26  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	* doc/invoke.texi (Warning Options): Fix some @opindex syntax.
+
 2019-06-26  Martin Liska  <mliska@suse.cz>
 
 	PR tree-optimization/90973
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index e6d591cc13d..03d2895c9d7 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -6146,8 +6146,8 @@ false positives and is deactivated by default.
 
 @item -Wattribute-alias=@var{n}
 @itemx -Wno-attribute-alias
-@opindex -Wattribute-alias
-@opindex -Wno-attribute-alias
+@opindex Wattribute-alias
+@opindex Wno-attribute-alias
 Warn about declarations using the @code{alias} and similar attributes whose
 target is incompatible with the type of the alias.
 @xref{Function Attributes,,Declaring Attributes of Functions}.