diff --git a/examples/openthread/ot_cli/partitions.csv b/examples/openthread/ot_cli/partitions.csv
index a55f875a133..c3d3df1e291 100644
--- a/examples/openthread/ot_cli/partitions.csv
+++ b/examples/openthread/ot_cli/partitions.csv
@@ -2,4 +2,4 @@
 # Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
 nvs,        data, nvs,      0x9000,  0x6000,
 phy_init,   data, phy,      0xf000,  0x1000,
-factory,    app,  factory,  0x10000, 0x140000,
+factory,    app,  factory,  0x10000, 1500K,
diff --git a/examples/openthread/ot_trel/partitions.csv b/examples/openthread/ot_trel/partitions.csv
index 641bcc9afcc..1da5005fac2 100644
--- a/examples/openthread/ot_trel/partitions.csv
+++ b/examples/openthread/ot_trel/partitions.csv
@@ -2,4 +2,4 @@
 # Note: if you have increased the bootloader size, make sure to update the offsets to avoid overlap
 nvs,        data, nvs,      0x9000,  0x6000,
 phy_init,   data, phy,      0xf000,  0x1000,
-factory,    app,  factory,  0x10000, 0x170000,
+factory,    app,  factory,  0x10000, 1700K,