diff --git a/x11-wm/oroborus/files/oroborus-2.0.20-fno-common.patch b/x11-wm/oroborus/files/oroborus-2.0.20-fno-common.patch
new file mode 100644
index 0000000000000..e7a1e21571528
--- /dev/null
+++ b/x11-wm/oroborus/files/oroborus-2.0.20-fno-common.patch
@@ -0,0 +1,33 @@
+--- a/src/hints.c
++++ b/src/hints.c
+@@ -43,7 +43,7 @@ Atom win_hints, win_state, win_client_list, win_layer, win_workspace,
+   win_workspace_count, win_desktop_button_proxy, win_supporting_wm_check,
+   gnome_panel_desktop_area;
+ Atom net_atoms[NET_ATOM_COUNT];
+-Display *dpy;
++extern Display *dpy;
+ 
+ void
+ initHints (Display * d)
+--- a/src/keyboard.c
++++ b/src/keyboard.c
+@@ -35,6 +35,8 @@
+ #include <stdio.h>
+ #endif
+ 
++int NumLockMask, CapsLockMask, ScrollLockMask;
++
+ void
+ parseKeyString (Display * dpy, MyKey * key, char *str)
+ {
+--- a/src/keyboard.h
++++ b/src/keyboard.h
+@@ -90,7 +90,7 @@ void grabKey (Display *, MyKey *, Window);
+ void ungrabKeys (Display *, Window);
+ void init_keyboard (Display * dpy);
+ 
+-int NumLockMask, CapsLockMask, ScrollLockMask;
++extern int NumLockMask, CapsLockMask, ScrollLockMask;
+ 
+ #endif /* __KEYBOARD_H */
+ 
diff --git a/x11-wm/oroborus/oroborus-2.0.20-r1.ebuild b/x11-wm/oroborus/oroborus-2.0.20-r1.ebuild
index 071ee8295d30c..1c0dec3cece93 100644
--- a/x11-wm/oroborus/oroborus-2.0.20-r1.ebuild
+++ b/x11-wm/oroborus/oroborus-2.0.20-r1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 1999-2018 Gentoo Foundation
+# Copyright 1999-2020 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -10,7 +10,6 @@ SRC_URI="mirror://debian/pool/main/o/${PN}/${PN}_${PV}.tar.gz"
 LICENSE="GPL-2"
 SLOT="0"
 KEYWORDS="amd64 ppc x86"
-IUSE=""
 
 RDEPEND="
 	x11-libs/libICE
@@ -21,4 +20,6 @@ RDEPEND="
 DEPEND="${RDEPEND}
 	x11-base/xorg-proto"
 
+PATCHES=( "${FILESDIR}"/${P}-fno-common.patch )
+
 DOCS=( AUTHORS ChangeLog example.${PN}rc README TODO )