diff --git a/net/caif/cfsrvl.c b/net/caif/cfsrvl.c
index d0a4d0ac7045..9cef9496a707 100644
--- a/net/caif/cfsrvl.c
+++ b/net/caif/cfsrvl.c
@@ -21,7 +21,6 @@
 #define SRVL_FLOW_OFF 0x81
 #define SRVL_FLOW_ON  0x80
 #define SRVL_SET_PIN  0x82
-#define SRVL_CTRL_PKT_SIZE 1
 
 #define container_obj(layr) container_of(layr, struct cfsrvl, layer)