diff --git a/0001-fix-gcc-build-error.patch b/0001-fix-gcc-build-error.patch
new file mode 100644
index 0000000..84bc6a0
--- /dev/null
+++ b/0001-fix-gcc-build-error.patch
@@ -0,0 +1,42 @@
+From f9eda02b6f12e8e8b7f15751e8fa6079de762234 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
+Date: Wed, 3 Feb 2016 10:30:43 +0000
+Subject: [PATCH] fix gcc build error
+
+error: invalid operands of types '__gnu_cxx::__enable_if<true, double>::__type
+{aka double}' and 'int' to binary 'operator%'
+
+apparently there's a template returning double for abs for the
+non-int/long/float/double argument case. So promote earlier to int so the
+abs<int> is called
+
+Change-Id: I882a27c5ec349f894c1c9f4857687360a46b55ae
+---
+ sax/source/tools/converter.cxx | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/sax/source/tools/converter.cxx b/sax/source/tools/converter.cxx
+index 744415e..cf061c9 100644
+--- a/sax/source/tools/converter.cxx
++++ b/sax/source/tools/converter.cxx
+@@ -1250,7 +1250,7 @@ bool Converter::convertDuration(util::Duration& rDuration,
+ 
+ 
+ static void
+-lcl_AppendTimezone(OUStringBuffer & i_rBuffer, sal_Int16 const nOffset)
++lcl_AppendTimezone(OUStringBuffer & i_rBuffer, int const nOffset)
+ {
+     if (0 == nOffset)
+     {
+@@ -1435,7 +1435,7 @@ lcl_MaxDaysPerMonth(const sal_Int32 nMonth, const sal_Int32 nYear)
+ static void lcl_ConvertToUTC(
+         sal_Int16 & o_rYear, sal_uInt16 & o_rMonth, sal_uInt16 & o_rDay,
+         sal_uInt16 & o_rHours, sal_uInt16 & o_rMinutes,
+-        sal_Int16 const nSourceOffset)
++        int const nSourceOffset)
+ {
+     sal_Int16 nOffsetHours(abs(nSourceOffset) / 60);
+     sal_Int16 const nOffsetMinutes(abs(nSourceOffset) % 60);
+-- 
+2.5.0
+
diff --git a/libreoffice.spec b/libreoffice.spec
index 322c085..6c3a594 100644
--- a/libreoffice.spec
+++ b/libreoffice.spec
@@ -255,6 +255,7 @@ Patch17: 0002-disable-tearability-of-color-window.patch
 Patch18: 0001-rhbz-1168757-propagate-selected-slides-to-print-dial.patch
 Patch19: 0001-error-left-operand-of-shift-expression-1-4-is-negati.patch
 Patch20: 0001-Missing-include.patch
+Patch21: 0001-fix-gcc-build-error.patch
 
 %define instdir %{_libdir}
 %define baseinstdir %{instdir}/libreoffice