diff --git a/samples/bluetooth/ccp_call_control_client/README.rst b/samples/bluetooth/ccp_call_control_client/README.rst
index db277929788..ae27a843a6d 100644
--- a/samples/bluetooth/ccp_call_control_client/README.rst
+++ b/samples/bluetooth/ccp_call_control_client/README.rst
@@ -29,7 +29,7 @@ Building and Running
 ********************
 
 When building targeting an nrf52 series board with the Zephyr Bluetooth Controller,
-use ``-DOVERLAY_CONFIG=overlay-bt_ll_sw_split.conf`` to enable the required feature support.
+use ``-DEXTRA_CONF_FILE=overlay-bt_ll_sw_split.conf`` to enable the required feature support.
 
 Building for an nrf5340dk
 -------------------------
@@ -75,4 +75,4 @@ Building for a simulated nrf52_bsim
    :zephyr-app: samples/bluetooth/ccp_call_control_client/
    :board: nrf52_bsim
    :goals: build
-   :gen-args: -DOVERLAY_CONFIG=overlay-bt_ll_sw_split.conf
+   :gen-args: -DEXTRA_CONF_FILE=overlay-bt_ll_sw_split.conf
diff --git a/samples/bluetooth/ccp_call_control_client/sample.yaml b/samples/bluetooth/ccp_call_control_client/sample.yaml
index 88fc3e30aa1..c4e565d1bb6 100644
--- a/samples/bluetooth/ccp_call_control_client/sample.yaml
+++ b/samples/bluetooth/ccp_call_control_client/sample.yaml
@@ -26,5 +26,5 @@ tests:
       - nrf52833dk/nrf52833
       - nrf52840dk/nrf52840
       - nrf52840dongle/nrf52840
-    extra_args: OVERLAY_CONFIG=overlay-bt_ll_sw_split.conf
+    extra_args: EXTRA_CONF_FILE=overlay-bt_ll_sw_split.conf
     tags: bluetooth
diff --git a/samples/bluetooth/ccp_call_control_server/README.rst b/samples/bluetooth/ccp_call_control_server/README.rst
index eab3bbbdc0a..da8594e0349 100644
--- a/samples/bluetooth/ccp_call_control_server/README.rst
+++ b/samples/bluetooth/ccp_call_control_server/README.rst
@@ -28,7 +28,7 @@ Building and Running
 ********************
 
 When building targeting an nrf52 series board with the Zephyr Bluetooth Controller,
-use ``-DOVERLAY_CONFIG=overlay-bt_ll_sw_split.conf`` to enable the required feature support.
+use ``-DEXTRA_CONF_FILE=overlay-bt_ll_sw_split.conf`` to enable the required feature support.
 
 Building for an nrf5340dk
 -------------------------
@@ -74,4 +74,4 @@ Building for a simulated nrf52_bsim
    :zephyr-app: samples/bluetooth/ccp_call_control_server/
    :board: nrf52_bsim
    :goals: build
-   :gen-args: -DOVERLAY_CONFIG=overlay-bt_ll_sw_split.conf
+   :gen-args: -DEXTRA_CONF_FILE=overlay-bt_ll_sw_split.conf
diff --git a/samples/bluetooth/ccp_call_control_server/sample.yaml b/samples/bluetooth/ccp_call_control_server/sample.yaml
index 501c5b37421..1e93a6938e5 100644
--- a/samples/bluetooth/ccp_call_control_server/sample.yaml
+++ b/samples/bluetooth/ccp_call_control_server/sample.yaml
@@ -26,5 +26,5 @@ tests:
       - nrf52833dk/nrf52833
       - nrf52840dk/nrf52840
       - nrf52840dongle/nrf52840
-    extra_args: OVERLAY_CONFIG=overlay-bt_ll_sw_split.conf
+    extra_args: EXTRA_CONF_FILE=overlay-bt_ll_sw_split.conf
     tags: bluetooth