diff --git a/doc/pacman.8.asciidoc b/doc/pacman.8.asciidoc
index 812fddab..cd573d57 100644
--- a/doc/pacman.8.asciidoc
+++ b/doc/pacman.8.asciidoc
@@ -240,8 +240,8 @@ Transaction Options (apply to '-S', '-R' and '-U')
 	"%g" for base64 encoded PGP signature, "%h" for sha256sum, "%n" for
 	pkgname, "%p" for packager, "%v" for pkgver, "%l" for location, "%r"
 	for repository, "%s" for size, "%C" for checkdepends, "%D" for depends,
-	"%L" for licenses, and "%M" for makedepends, "%P" for provides and
-        "%R" for replaces.
+	"%L" for licenses, and "%M" for makedepends, "%O" for optional depends,
+	"%P" for provides and "%R" for replaces.
 	Implies '\--print'.
 
 
diff --git a/src/pacman/util.c b/src/pacman/util.c
index bd901e07..1b5a68d9 100644
--- a/src/pacman/util.c
+++ b/src/pacman/util.c
@@ -1279,6 +1279,15 @@ void print_packages(const alpm_list_t *packages)
 			free(temp);
 			temp = string;
 		}
+		/* %O : optional */
+		if(strstr(temp, "%O")) {
+			alpm_list_t *lst = alpm_pkg_get_optdepends(pkg);
+			char *depends = concat_list(lst, (formatfn)alpm_dep_compute_string);
+			string = strreplace(temp, "%O", depends);
+			free(depends);
+			free(temp);
+			temp = string;
+		}
 		/* %P : provides */
 		if(strstr(temp, "%P")) {
 			alpm_list_t *lst = alpm_pkg_get_provides(pkg);