diff --git a/kdelibs-3.5.10-gcc7.patch b/kdelibs-3.5.10-gcc7.patch
new file mode 100644
index 0000000..b5914bc
--- /dev/null
+++ b/kdelibs-3.5.10-gcc7.patch
@@ -0,0 +1,12 @@
+diff -up kdelibs-3.5.10/kate/part/katebuffer.cpp~ kdelibs-3.5.10/kate/part/katebuffer.cpp
+--- kdelibs-3.5.10/kate/part/katebuffer.cpp~	2017-02-21 09:44:34.000000000 +0100
++++ kdelibs-3.5.10/kate/part/katebuffer.cpp	2017-02-21 09:48:20.132333343 +0100
+@@ -919,7 +919,7 @@ void KateBuffer::updatePreviousNotEmptyL
+   } while (textLine->firstChar()==-1);
+   kdDebug(13020)<<"updatePreviousNotEmptyLine: updating line:"<<(blk->startLine()+current_line)<<endl;
+   QMemArray<uint> foldingList=textLine->foldingListArray();
+-  while ( (foldingList.size()>0)  && ( std::abs(foldingList[foldingList.size()-2])==1)) {
++  while ( (foldingList.size()>0)  && ( std::abs((long)foldingList[foldingList.size()-2])==1)) {
+     foldingList.resize(foldingList.size()-2,QGArray::SpeedOptim);
+   }
+   addIndentBasedFoldingInformation(foldingList,addindent,deindent);
diff --git a/kdelibs3.spec b/kdelibs3.spec
index ec3edb9..5d683c0 100644
--- a/kdelibs3.spec
+++ b/kdelibs3.spec
@@ -18,7 +18,7 @@
 Summary: KDE 3 Libraries
 Name:    kdelibs3
 Version: 3.5.10
-Release: 81%{?dist}
+Release: 82%{?dist}
 
 License: LGPLv2
 Url: http://www.kde.org/
@@ -68,6 +68,8 @@ Patch58: kdelibs-3.5.10-cups20.patch
 Patch59: kdelibs-3.5.10-gcc6.patch
 # fix endless loop in svgicon
 Patch60: kdelibs-3.5.10-svgicon-endlessloop.patch
+# fix FTBFS with gcc7
+Patch61: kdelibs-3.5.10-gcc7.patch
 
 # use /etc/kde in addition to /usr/share/config, borrowed from debian
 Patch100: kdelibs-3.5.5-kstandarddirs.patch
@@ -277,6 +279,7 @@ This package includes tools kgrantpty and kpac_dhcp_helper.
 %patch58 -p1 -b .cups20
 %patch59 -p1 -b .gcc6
 %patch60 -p1 -b .endless-loop
+%patch61 -p1 -b .gcc7
 
 %patch100 -p1 -b .kstandarddirs
 %patch101 -p1 -b .libtool-shlibext
@@ -631,6 +634,9 @@ touch --no-create %{_datadir}/icons/crystalsvg 2> /dev/null || :
 %attr(4755,root,root) %{_bindir}/kpac_dhcp_helper
 
 %changelog
+* Tue Feb 21 2017 Hans de Goede <hdegoede@redhat.com> - 3.5.10-82
+- Fix gcc7 FTBFS (rhbz#1423808)
+
 * Fri Feb 10 2017 Fedora Release Engineering <releng@fedoraproject.org> - 3.5.10-81
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_Mass_Rebuild