diff --git a/incompatible_pointer_build_fix.patch b/incompatible_pointer_build_fix.patch
new file mode 100644
index 0000000..50678be
--- /dev/null
+++ b/incompatible_pointer_build_fix.patch
@@ -0,0 +1,12 @@
+diff -up libappindicator-12.10.0/src/app-indicator.c.build_fix libappindicator-12.10.0/src/app-indicator.c
+--- libappindicator-12.10.0/src/app-indicator.c.build_fix	2018-04-10 14:43:57.134400594 +0200
++++ libappindicator-12.10.0/src/app-indicator.c	2018-04-10 14:45:34.655448722 +0200
+@@ -2196,7 +2196,7 @@ app_indicator_set_secondary_activate_tar
+ 
+ 	g_return_if_fail (GTK_IS_WIDGET (menuitem));
+ 
+-	priv->sec_activate_target = g_object_ref(G_OBJECT(menuitem));
++	priv->sec_activate_target = g_object_ref(menuitem);
+ 	priv->sec_activate_enabled = widget_is_menu_child(self, menuitem);
+ 	g_signal_connect(menuitem, "parent-set", G_CALLBACK(sec_activate_target_parent_changed), self);
+ }
diff --git a/libappindicator.spec b/libappindicator.spec
index f68b304..c40209f 100644
--- a/libappindicator.spec
+++ b/libappindicator.spec
@@ -1,6 +1,6 @@
 Name:		libappindicator
 Version:	12.10.0
-Release:	19%{?dist}
+Release:	20%{?dist}
 Summary:	Application indicators library
 
 Group:		System Environment/Libraries
@@ -8,6 +8,8 @@ License:	LGPLv2 and LGPLv3
 URL:		https://launchpad.net/libappindicator
 Source0:	https://launchpad.net/libappindicator/12.10/%{version}/+download/%{name}-%{version}.tar.gz
 Patch0:		0001_Fix_mono_dir.patch
+# https://bazaar.launchpad.net/~indicator-applet-developers/libappindicator/trunk.16.10/revision/285
+Patch1:		incompatible_pointer_build_fix.patch
 
 BuildRequires:	autoconf
 BuildRequires:	automake
@@ -122,6 +124,7 @@ This package contains the development files for the appindicator-sharp library.
 %prep
 %setup -q
 %patch0 -p1 -b .monodir
+%patch1 -p1 -b .incompatible_pointer_build_fix
 
 sed -i "s#gmcs#mcs#g" configure.ac
 # fix for gtk-doc 1.26
@@ -243,6 +246,9 @@ find %{buildroot} -type f -name '*.la' -delete
 %endif
 
 %changelog
+* Tue Apr 10 2018 Tomas Popela <tpopela@redhat.com> - 12.10.0-20
+- Fix the build on F28+ with new glib2
+
 * Wed Feb 07 2018 Fedora Release Engineering <releng@fedoraproject.org> - 12.10.0-19
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild