diff --git a/esc-1.1.1-fix4.patch b/esc-1.1.1-fix4.patch
new file mode 100644
index 0000000..8490dd5
--- /dev/null
+++ b/esc-1.1.1-fix4.patch
@@ -0,0 +1,30 @@
+diff -up ./esc/src/xulrunner/xulrunner-45.9.0/firefox-45.9.0esr/config/system-headers.fix4 ./esc/src/xulrunner/xulrunner-45.9.0/firefox-45.9.0esr/config/system-headers
+--- ./esc/src/xulrunner/xulrunner-45.9.0/firefox-45.9.0esr/config/system-headers.fix4	2018-06-08 16:19:38.502459087 -0700
++++ ./esc/src/xulrunner/xulrunner-45.9.0/firefox-45.9.0esr/config/system-headers	2018-06-08 16:20:33.330152105 -0700
+@@ -1067,6 +1067,7 @@ sys/statvfs.h
+ sys/syscall.h
+ sys/sysctl.h
+ sys/sysinfo.h
++sys/sysmacros.h
+ sys/sysmp.h
+ sys/syssgi.h
+ sys/system_properties.h
+diff -up ./esc/src/xulrunner/xulrunner-45.9.0/firefox-45.9.0esr/xpcom/io/nsLocalFileUnix.cpp.fix4 ./esc/src/xulrunner/xulrunner-45.9.0/firefox-45.9.0esr/xpcom/io/nsLocalFileUnix.cpp
+--- ./esc/src/xulrunner/xulrunner-45.9.0/firefox-45.9.0esr/xpcom/io/nsLocalFileUnix.cpp.fix4	2018-06-08 16:17:21.337227098 -0700
++++ ./esc/src/xulrunner/xulrunner-45.9.0/firefox-45.9.0esr/xpcom/io/nsLocalFileUnix.cpp	2018-06-08 16:18:16.820916423 -0700
+@@ -10,7 +10,6 @@
+ 
+ #include "mozilla/ArrayUtils.h"
+ #include "mozilla/Attributes.h"
+-#include <sys/sysmacros.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <unistd.h>
+@@ -28,6 +27,7 @@
+ #define USE_LINUX_QUOTACTL
+ #include <sys/mount.h>
+ #include <sys/quota.h>
++#include <sys/sysmacros.h>
+ #ifndef BLOCK_SIZE
+ #define BLOCK_SIZE 1024 /* kernel block size */
+ #endif
diff --git a/esc.spec b/esc.spec
index 667975e..1794d90 100644
--- a/esc.spec
+++ b/esc.spec
@@ -13,6 +13,7 @@ Group: Applications/Internet
 Patch1: esc-1.1.1-fix1.patch
 Patch2: esc-1.1.1-fix2.patch
 Patch3: esc-1.1.1-fix3.patch
+Patch4: esc-1.1.1-fix4.patch
 
 BuildRequires: doxygen fontconfig-devel
 BuildRequires: glib2-devel atk-devel
@@ -125,6 +126,7 @@ cryptographic smartcards.
 %patch1 -p1 -b .fix1
 %patch2 -p1 -b .fix2
 %patch3 -p1 -b .fix3
+%patch4 -p1 -b .fix4
 
 r=$(uname -r | sed -e 's/\(^[^.]*\.[^.]*\).*/\1/')
 [ -f esc/coreconf/Linux$r.mk ] || ln -s Linux3.5.mk esc/coreconf/Linux$r.mk