diff --git a/gcc/fortran/invoke.texi b/gcc/fortran/invoke.texi
index 5385bbae876..996556fb5bc 100644
--- a/gcc/fortran/invoke.texi
+++ b/gcc/fortran/invoke.texi
@@ -537,8 +537,8 @@ store the return value.  Under the default GNU calling conventions, such
 functions simply return their results as they would in GNU
 C -- default @code{REAL} functions return the C type @code{float}, and
 @code{COMPLEX} functions return the GNU C type @code{complex}.
-Additionally, this option implies the @options{-fsecond-underscore}
-option, unless @options{-fno-second-underscore} is explicitly requested.
+Additionally, this option implies the @option{-fsecond-underscore}
+option, unless @option{-fno-second-underscore} is explicitly requested.
 
 This does not affect the generation of code that interfaces with
 the @command{libgfortran} library.