diff --git a/include/net/caif/cfsrvl.h b/include/net/caif/cfsrvl.h
index 5ee7b322e18b..a000dc45f966 100644
--- a/include/net/caif/cfsrvl.h
+++ b/include/net/caif/cfsrvl.h
@@ -40,7 +40,6 @@ void cfsrvl_init(struct cfsrvl *service,
 			struct dev_info *dev_info,
 			bool supports_flowctrl);
 bool cfsrvl_ready(struct cfsrvl *service, int *err);
-u8 cfsrvl_getphyid(struct cflayer *layer);
 
 static inline void cfsrvl_get(struct cflayer *layr)
 {
diff --git a/net/caif/cfsrvl.c b/net/caif/cfsrvl.c
index 9cef9496a707..171fa32ada85 100644
--- a/net/caif/cfsrvl.c
+++ b/net/caif/cfsrvl.c
@@ -183,12 +183,6 @@ bool cfsrvl_ready(struct cfsrvl *service, int *err)
 	return true;
 }
 
-u8 cfsrvl_getphyid(struct cflayer *layer)
-{
-	struct cfsrvl *servl = container_obj(layer);
-	return servl->dev_info.id;
-}
-
 bool cfsrvl_phyid_match(struct cflayer *layer, int phyid)
 {
 	struct cfsrvl *servl = container_obj(layer);