diff --git a/gcc.patch b/gcc.patch
new file mode 100644
index 0000000..7d24477
--- /dev/null
+++ b/gcc.patch
@@ -0,0 +1,33 @@
+From 913120fe50ee770e60bd82e2e60047242872111a Mon Sep 17 00:00:00 2001
+From: Lionel Elie Mamane <lionel@mamane.lu>
+Date: Wed, 10 Jul 2019 10:27:19 +0200
+Subject: build failure - disambiguate Calendar return class
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Change-Id: I892281f85f6cc9c2de2c341ae63240ae85d302c4
+Reviewed-on: https://gerrit.libreoffice.org/76595
+Reviewed-by: Tomáš Chvátal <tchvatal@suse.cz>
+Reviewed-by: Lionel Elie Mamane <lionel@mamane.lu>
+Tested-by: Jenkins
+---
+ i18npool/source/calendar/calendarImpl.cxx | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/i18npool/source/calendar/calendarImpl.cxx b/i18npool/source/calendar/calendarImpl.cxx
+index c9e22f7..228bed3 100644
+--- a/i18npool/source/calendar/calendarImpl.cxx
++++ b/i18npool/source/calendar/calendarImpl.cxx
+@@ -128,7 +128,7 @@ CalendarImpl::getLoadedCalendar2()
+     return xCalendar->getLoadedCalendar2();
+ }
+ 
+-Calendar SAL_CALL
++::css::i18n::Calendar SAL_CALL
+ CalendarImpl::getLoadedCalendar()
+ {
+     if (!xCalendar.is())
+-- 
+cgit v1.1
+
diff --git a/libreoffice.changes b/libreoffice.changes
index 995b776..5926b10 100644
--- a/libreoffice.changes
+++ b/libreoffice.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed Jul 31 11:31:01 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
+
+- Add patch to fix building on older openSUSE releases:
+  * gcc.patch
+
 -------------------------------------------------------------------
 Fri Jul 19 08:19:37 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
 
diff --git a/libreoffice.spec b/libreoffice.spec
index 39ecd07..8285c9b 100644
--- a/libreoffice.spec
+++ b/libreoffice.spec
@@ -100,6 +100,7 @@ Patch1:         scp2-user-config-suse.diff
 # FIXME: the right fix is to compile the help and produce the .db_, .ht_, and other files
 Patch2:         nlpsolver-no-broken-help.diff
 Patch3:         mediawiki-no-broken-help.diff
+Patch4:         gcc.patch
 # try to save space by using hardlinks
 Patch990:       install-with-hardlinks.diff
 # save time by relying on rpm check rather than doing stupid find+grep
@@ -969,6 +970,7 @@ Provides %{langname} translations and additional resources (help files, etc.) fo
 %endif # Leap 42/SLE-12
 %patch2
 %patch3
+%patch4 -p1
 %patch990 -p1
 %patch991 -p1