diff --git a/samples/subsys/usb_c/sink/prj.conf b/samples/subsys/usb_c/sink/prj.conf
index 563bfb8f3a9..4761e4d2459 100644
--- a/samples/subsys/usb_c/sink/prj.conf
+++ b/samples/subsys/usb_c/sink/prj.conf
@@ -1,4 +1,5 @@
 CONFIG_USBC_STACK=y
+CONFIG_USBC_CSM_SINK_ONLY=y
 CONFIG_USBC_THREAD_PRIORITY=10
 CONFIG_ADC=y
 CONFIG_LOG=y