diff --git a/exim-4.12-tail.patch b/exim-4.12-tail.patch
new file mode 100644
index 0000000..1f44470
--- /dev/null
+++ b/exim-4.12-tail.patch
@@ -0,0 +1,11 @@
+--- scripts/Configure-config.h
++++ scripts/Configure-config.h
+@@ -41,7 +41,7 @@
+ 
+ # Double-check that config.h is complete.
+ 
+-if [ "`tail -1 config.h`" != "/* End of config.h */" ] ; then
++if [ "`tail -n 1 config.h`" != "/* End of config.h */" ] ; then
+   echo "*** config.h appears to be incomplete"
+   echo "*** unexpected failure in buildconfig program"
+   exit 1