diff --git a/samples/suit/recovery/prj.conf b/samples/suit/recovery/prj.conf
index 9aff7421c393..97681ae7ba04 100644
--- a/samples/suit/recovery/prj.conf
+++ b/samples/suit/recovery/prj.conf
@@ -66,8 +66,13 @@ CONFIG_BT_DEVICE_NAME="SUIT Recovery"
 ########
 
 # Disable unneeded drivers, peripherals and features to optimize for size
+
 CONFIG_SIZE_OPTIMIZATIONS=y
 
+# Enable LTO
+CONFIG_LTO=y
+CONFIG_ISR_TABLES_LOCAL_DECLARATION=y
+
 CONFIG_I2C=n
 CONFIG_WATCHDOG=n
 CONFIG_SPI=n
diff --git a/samples/suit/recovery/sysbuild/hci_ipc.conf b/samples/suit/recovery/sysbuild/hci_ipc.conf
index d0f32e600333..9a0e3805ff22 100644
--- a/samples/suit/recovery/sysbuild/hci_ipc.conf
+++ b/samples/suit/recovery/sysbuild/hci_ipc.conf
@@ -45,6 +45,11 @@ CONFIG_PRINTK=n
 
 CONFIG_SIZE_OPTIMIZATIONS=y
 
+# Enable LTO
+CONFIG_LTO=y
+CONFIG_ISR_TABLES_LOCAL_DECLARATION=y
+
+
 CONFIG_BT_CTLR_CRYPTO=n
 CONFIG_ENTROPY_GENERATOR=y