diff --git a/www-client/otter/otter-0.9.12.ebuild b/www-client/otter/otter-0.9.12.ebuild
index 123171f63030c..a2e32ebc01dc1 100644
--- a/www-client/otter/otter-0.9.12.ebuild
+++ b/www-client/otter/otter-0.9.12.ebuild
@@ -2,8 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
-
-inherit eutils cmake-utils
+inherit eutils cmake-utils gnome2-utils xdg-utils
 
 DESCRIPTION="Project aiming to recreate classic Opera (12.x) UI using Qt5"
 HOMEPAGE="http://otter-browser.org/"
@@ -60,3 +59,13 @@ src_install() {
 	cmake-utils_src_install
 	domenu ${PN}-browser.desktop
 }
+
+pkg_postinst() {
+	gnome2_icon_cache_update
+	xdg_desktop_database_update
+}
+
+pkg_postrm() {
+	gnome2_icon_cache_update
+	xdg_desktop_database_update
+}
diff --git a/www-client/otter/otter-9999.ebuild b/www-client/otter/otter-9999.ebuild
index fdb1f94ba3ad2..012c8341b636d 100644
--- a/www-client/otter/otter-9999.ebuild
+++ b/www-client/otter/otter-9999.ebuild
@@ -2,8 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
-
-inherit eutils cmake-utils git-r3
+inherit eutils cmake-utils git-r3 gnome2-utils xdg-utils
 
 DESCRIPTION="Project aiming to recreate classic Opera (12.x) UI using Qt5"
 HOMEPAGE="http://otter-browser.org/"
@@ -51,3 +50,13 @@ src_install() {
 	cmake-utils_src_install
 	domenu ${PN}-browser.desktop
 }
+
+pkg_postinst() {
+	gnome2_icon_cache_update
+	xdg_desktop_database_update
+}
+
+pkg_postrm() {
+	gnome2_icon_cache_update
+	xdg_desktop_database_update
+}