diff --git a/samples/sid_end_device/Kconfig b/samples/sid_end_device/Kconfig
index 9f8985e94..e3c145275 100644
--- a/samples/sid_end_device/Kconfig
+++ b/samples/sid_end_device/Kconfig
@@ -113,4 +113,10 @@ endif # SIDEWALK_FILE_TRANSFER
 
 rsource "Kconfig.defconfig"
 
+if IPC_SERVICE_BACKEND_ICBMSG
+
+config IPC_SERVICE_BACKEND_ICBMSG_NUM_EP
+	default 5
+endif 
+
 source "Kconfig.zephyr"
diff --git a/samples/sid_end_device/sysbuild/ipc_radio/prj.conf b/samples/sid_end_device/sysbuild/ipc_radio/prj.conf
index e172bfded..cba956950 100644
--- a/samples/sid_end_device/sysbuild/ipc_radio/prj.conf
+++ b/samples/sid_end_device/sysbuild/ipc_radio/prj.conf
@@ -26,6 +26,7 @@ CONFIG_BT_CTLR_ADV_EXT=y
 
 # IPC
 CONFIG_IPC_SERVICE=y
+CONFIG_IPC_SERVICE_BACKEND_ICBMSG_NUM_EP=5
 CONFIG_MBOX=y
 
 # Debug