diff --git a/jbigkit-covscan.patch b/jbigkit-covscan.patch
new file mode 100644
index 0000000..22282b9
--- /dev/null
+++ b/jbigkit-covscan.patch
@@ -0,0 +1,30 @@
+diff --git a/libjbig/jbig.c b/libjbig/jbig.c
+index 751ceff..3c76e07 100644
+--- a/libjbig/jbig.c
++++ b/libjbig/jbig.c
+@@ -889,7 +889,7 @@ void jbg_enc_options(struct jbg_enc_state *s, int order, int options,
+   if (order >= 0 && order <= 0x0f) s->order = order;
+   if (options >= 0) s->options = options;
+   if (l0 > 0) s->l0 = l0;
+-  if (mx >= 0 && my < 128) s->mx = mx;
++  if (mx >= 0 && mx < 128) s->mx = mx;
+   if (my >= 0 && my < 256) s->my = my;
+ 
+   return;
+diff --git a/pbmtools/Makefile b/pbmtools/Makefile
+index 85e1783..6ae2d33 100644
+--- a/pbmtools/Makefile
++++ b/pbmtools/Makefile
+@@ -56,9 +56,9 @@ test82: pbmtojbg jbgtopbm
+ 	make IMG=sandra    "OPTIONSP=-o 2" OPTIONSJ=       dotest2g
+ 	make IMG=multi      OPTIONSP=      OPTIONSJ=       dotest2g
+ 	make IMG=multi      OPTIONSP=-b    OPTIONSJ=-b     dotest2g
+-	make IMG=mx        "OPTIONSP=-q -s 3 -m 128"       dotest1
+-	make IMG=mx        "OPTIONSP=-q -s 3 -m 128"       dotest2b
+-	make IMG=mx        "OPTIONSP=-q -s 3 -m 128 -p 92" dotest2b
++	make IMG=mx        "OPTIONSP=-q -s 3 -m 127"       dotest1
++	make IMG=mx        "OPTIONSP=-q -s 3 -m 127"       dotest2b
++	make IMG=mx        "OPTIONSP=-q -s 3 -m 127 -p 92" dotest2b
+ 	make IMG=mx        "OPTIONSP=-q -Y -1"             dotest2b
+ 	make IMG=mx        "OPTIONSP=-Y -1"                dotest2b
+ 	rm -f test-*.jbg test-*.pbm test-*.pgm
diff --git a/jbigkit.spec b/jbigkit.spec
index a121c66..b3db3ce 100644
--- a/jbigkit.spec
+++ b/jbigkit.spec
@@ -1,6 +1,6 @@
 Name:           jbigkit
 Version:        2.1
-Release:        14%{?dist}
+Release:        15%{?dist}
 Summary:        JBIG1 lossless image compression tools
 
 License:        GPLv2+
@@ -9,6 +9,8 @@ Source0:        http://www.cl.cam.ac.uk/~mgk25/download/jbigkit-%{version}.tar.g
 Patch0:         jbigkit-2.1-shlib.patch
 Patch1:         jbigkit-2.0-warnings.patch
 Patch2:         jbigkit-ldflags.patch
+# patch for coverity issues - backported from upstream
+Patch3:         jbigkit-covscan.patch
 
 # gcc is no longer in buildroot by default
 # gcc needed for libjbig library and several filters - jbigtopbm, pbmtojbig e.g.
@@ -52,6 +54,8 @@ formats.
 %patch1 -p1 -b .warnings
 # jbigkit: Partial Fedora build flags injection (bug #1548546)
 %patch2 -p1 -b .ldflags
+# covscan issues - backported from upstream
+%patch3 -p1 -b .covscan
 
 %build
 # get the correct redhat build flags
@@ -99,6 +103,9 @@ make test
 %{_includedir}/jbig*.h
 
 %changelog
+* Thu Oct 25 2018 Zdenek Dohnal <zdohnal@redhat.com> - 2.1-15
+- fixed typo found by coverity
+
 * Fri Jul 13 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.1-14
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild