diff --git a/tests/subsys/settings/fcb/testcase.yaml b/tests/subsys/settings/fcb/testcase.yaml
index 75af705682e..4f30ca63eff 100644
--- a/tests/subsys/settings/fcb/testcase.yaml
+++ b/tests/subsys/settings/fcb/testcase.yaml
@@ -1,4 +1,4 @@
 tests:
   system.settings.fcb:
-    platform_whitelist: nrf52840_pca10056, nrf52_pca10040
+    platform_whitelist: nrf52840_pca10056 nrf52_pca10040
     tags: settings_fcb
diff --git a/tests/subsys/settings/fcb_init/testcase.yaml b/tests/subsys/settings/fcb_init/testcase.yaml
index 95c28318495..a466123fc9b 100644
--- a/tests/subsys/settings/fcb_init/testcase.yaml
+++ b/tests/subsys/settings/fcb_init/testcase.yaml
@@ -1,4 +1,4 @@
 tests:
   system.settings.fcb:
-    platform_whitelist: nrf52840_pca10056, nrf52_pca10040
+    platform_whitelist: nrf52840_pca10056 nrf52_pca10040
     tags: settings_intialization_fcb
diff --git a/tests/subsys/settings/nffs/testcase.yaml b/tests/subsys/settings/nffs/testcase.yaml
index 27439819e87..9f19cf78668 100644
--- a/tests/subsys/settings/nffs/testcase.yaml
+++ b/tests/subsys/settings/nffs/testcase.yaml
@@ -1,4 +1,4 @@
 tests:
   system.settings.nffs:
-    platform_whitelist: nrf52840_pca10056, nrf52_pca10040
+    platform_whitelist: nrf52840_pca10056 nrf52_pca10040
     tags: settings_fs