diff --git a/tests/test-runner/bin/zts-report.py b/tests/test-runner/bin/zts-report.py
index c5a1a2c3b9..111686920b 100755
--- a/tests/test-runner/bin/zts-report.py
+++ b/tests/test-runner/bin/zts-report.py
@@ -145,12 +145,8 @@ summary = {
 # reasons listed above can be used.
 #
 known = {
-    'casenorm/sensitive_formd_lookup': ['FAIL', '7633'],
-    'casenorm/sensitive_formd_delete': ['FAIL', '7633'],
     'casenorm/mixed_none_lookup_ci': ['FAIL', '7633'],
-    'casenorm/mixed_formd_lookup': ['FAIL', '7633'],
     'casenorm/mixed_formd_lookup_ci': ['FAIL', '7633'],
-    'casenorm/mixed_formd_delete': ['FAIL', '7633'],
     'cli_root/zfs_receive/zfs_receive_004_neg': ['FAIL', known_reason],
     'cli_root/zfs_unshare/zfs_unshare_002_pos': ['SKIP', na_reason],
     'cli_root/zfs_unshare/zfs_unshare_006_pos': ['SKIP', na_reason],
@@ -177,6 +173,10 @@ known = {
 #
 maybe = {
     'cache/cache_010_neg': ['FAIL', known_reason],
+    'casenorm/mixed_formd_lookup': ['FAIL', '7633'],
+    'casenorm/mixed_formd_delete': ['FAIL', '7633'],
+    'casenorm/sensitive_formd_lookup': ['FAIL', '7633'],
+    'casenorm/sensitive_formd_delete': ['FAIL', '7633'],
     'chattr/setup': ['SKIP', exec_reason],
     'cli_root/zdb/zdb_006_pos': ['FAIL', known_reason],
     'cli_root/zfs_get/zfs_get_004_pos': ['FAIL', known_reason],
diff --git a/tests/zfs-tests/tests/functional/casenorm/casenorm.kshlib b/tests/zfs-tests/tests/functional/casenorm/casenorm.kshlib
index 5b080165b9..cb61798d7b 100644
--- a/tests/zfs-tests/tests/functional/casenorm/casenorm.kshlib
+++ b/tests/zfs-tests/tests/functional/casenorm/casenorm.kshlib
@@ -65,10 +65,10 @@ function lookup_file
 {
 	typeset name=$1
 
-	if is_linux; then
-		test -f "${TESTDIR}/${name}" >/dev/null 2>&1
-	else
+	if is_illumos; then
 		zlook -l $TESTDIR $name >/dev/null 2>&1
+	else
+		test -f "${TESTDIR}/${name}" >/dev/null 2>&1
 	fi
 }
 
@@ -76,10 +76,10 @@ function lookup_file_ci
 {
 	typeset name=$1
 
-	if is_linux; then
-		test -f "${TESTDIR}/${name}" >/dev/null 2>&1
-	else
+	if is_illumos; then
 		zlook -il $TESTDIR $name >/dev/null 2>&1
+	else
+		test -f "${TESTDIR}/${name}" >/dev/null 2>&1
 	fi
 }