diff --git a/subsys/fs/fcb/fcb.c b/subsys/fs/fcb/fcb.c
index 778df0f54a6..44358a8dbea 100644
--- a/subsys/fs/fcb/fcb.c
+++ b/subsys/fs/fcb/fcb.c
@@ -82,8 +82,7 @@ fcb_erase_sector(const struct fcb *fcb, const struct flash_sector *sector)
 		return -EIO;
 	}
 
-	rc = flash_area_erase(fcb->fap, sector->fs_off, sector->fs_size);
-
+	rc = flash_area_flatten(fcb->fap, sector->fs_off, sector->fs_size);
 	if (rc != 0) {
 		return -EIO;
 	}
diff --git a/tests/subsys/fs/fcb/testcase.yaml b/tests/subsys/fs/fcb/testcase.yaml
index e01566b6721..19e47e33a1b 100644
--- a/tests/subsys/fs/fcb/testcase.yaml
+++ b/tests/subsys/fs/fcb/testcase.yaml
@@ -12,6 +12,12 @@ tests:
     tags: flash_circural_buffer
     integration_platforms:
       - nrf52840dk/nrf52840
+  filesystem.fcb.no_erase:
+    platform_allow:
+      - nrf54l15pdk/nrf54l15/cpuapp
+  filesystem.fcb.native_sim.no_erase:
+    extra_args: CONFIG_FLASH_SIMULATOR_EXPLICIT_ERASE=n
+    platform_allow: native_sim
   filesystem.fcb.native_sim.fcb_0x00:
     extra_args: DTC_OVERLAY_FILE=boards/native_sim_ev_0x00.overlay
     platform_allow: native_sim