2 files changed, 5 insertions, 0 deletions

diff --git a/tools/regression/usr.bin/sed/regress.icase3.out b/tools/regression/usr.bin/sed/regress.icase3.out
new file mode 100644
index 000000000000..2a26e6a31193
--- /dev/null
+++ b/tools/regression/usr.bin/sed/regress.icase3.out
@@ -0,0 +1,4 @@
+input
+data
+for validation
+of sed(1)
diff --git a/tools/regression/usr.bin/sed/regress.sh b/tools/regression/usr.bin/sed/regress.sh
index 64518a6b5f8e..febbb0fb1729 100644
--- a/tools/regression/usr.bin/sed/regress.sh
+++ b/tools/regression/usr.bin/sed/regress.sh
@@ -65,6 +65,7 @@ REGRESSION_TEST_FREEFORM(`inplace5', `inplace_test "3x;6G"')
 
 REGRESSION_TEST(`icase1', `sed /SED/Id < regress.in')
 REGRESSION_TEST(`icase2', `sed s/SED/Foo/I < regress.in')
+REGRESSION_TEST(`icase3', `sed s/SED/Foo/ < regress.in')
 
 REGRESSION_TEST(`hanoi', `echo ":abcd: : :" | sed -f hanoi.sed')
 REGRESSION_TEST(`math', `echo "4+7*3+2^7/3" | sed -f math.sed')