diff -Naur origin/pgadmin3.install modified/pgadmin3.install
--- origin/pgadmin3.install	2015-04-13 13:35:03.000000000 -0700
+++ modified/pgadmin3.install	2015-04-13 13:19:32.886104771 -0700
@@ -1,5 +1,6 @@
 post_install() {
   [ -x usr/bin/update-desktop-database ] && update-desktop-database -q || true
+  gtk-update-icon-cache -q -t -f usr/share/icons/hicolor
 }
 
 post_upgrade() {
diff -Naur origin/PKGBUILD modified/PKGBUILD
--- origin/PKGBUILD	2015-04-13 13:34:44.000000000 -0700
+++ modified/PKGBUILD	2015-04-13 13:32:27.788191172 -0700
@@ -19,7 +19,7 @@
 
 build() {
   cd "$srcdir"
-  convert pgadmin3-${pkgver}/pgadmin/include/images/pgAdmin3.ico pgadmin3.png
+  convert pgadmin3-${pkgver}/pgadmin/include/images/pgAdmin3.ico pgAdmin3.png
 
   cd "pgadmin3-${pkgver}"
   sed -i 's/wx-config/wx-config-2.8/' configure
@@ -35,7 +35,8 @@
   install -Dm644 i18n/$pkgname.lng "$pkgdir/usr/share/pgadmin3/i18n"
   install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
   install -Dm644 pgadmin/include/images/pgAdmin3.ico "$pkgdir/usr/share/pgadmin3/pgAdmin3.ico"
-  install -Dm644 "$srcdir/pgadmin3-3.png" "$pkgdir/usr/share/pgadmin3/pgAdmin3.png"
+  install -Dm644 "$srcdir/pgAdmin3-5.png" "$pkgdir/usr/share/icons/hicolor/16x16/apps/pgAdmin3.png"
+  install -Dm644 "$srcdir/pgAdmin3-4.png" "$pkgdir/usr/share/icons/hicolor/32x32/apps/pgAdmin3.png"
+  install -Dm644 "$srcdir/pgAdmin3-3.png" "$pkgdir/usr/share/icons/hicolor/48x48/apps/pgAdmin3.png"
   install -Dm644 "pkg/pgadmin3.desktop" "$pkgdir/usr/share/applications/pgadmin3.desktop"
-  sed -i 's|Icon=.*|Icon=pgAdmin3|' "$pkgdir/usr/share/applications/pgadmin3.desktop"
 }