diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt
index 0d0ad0a6374..f046d91d03b 100644
--- a/gcc/c-family/c.opt
+++ b/gcc/c-family/c.opt
@@ -1178,7 +1178,7 @@ C ObjC C++ ObjC++ Var(warn_pointer_arith) Warning LangEnabledBy(C ObjC C++ ObjC+
 Warn about function pointer arithmetic.
 
 Wpointer-sign
-C ObjC Var(warn_pointer_sign) Warning LangEnabledBy(C ObjC,Wall || Wpedantic)
+C ObjC Var(warn_pointer_sign) Warning LangEnabledBy(C ObjC,Wall || Wpedantic || Wextra)
 Warn when a pointer differs in signedness in an assignment.
 
 Wpointer-compare
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 277ac35ad16..23a51c6d266 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -9952,8 +9952,8 @@ itself is likely to take inordinate amounts of time.
 @opindex Wno-pointer-sign
 Warn for pointer argument passing or assignment with different signedness.
 This option is only supported for C and Objective-C@.  It is implied by
-@option{-Wall} and by @option{-Wpedantic}, which can be disabled with
-@option{-Wno-pointer-sign}.
+each of @option{-Wall}, @option{-Wextra}. and @option{-Wpedantic}, in
+which case it can be disabled with @option{-Wno-pointer-sign}.
 
 @item -Wstack-protector
 @opindex Wstack-protector