diff --git a/subsys/bluetooth/controller/ll_sw/ull.c b/subsys/bluetooth/controller/ll_sw/ull.c
index e013563fd18..ce9db658ee0 100644
--- a/subsys/bluetooth/controller/ll_sw/ull.c
+++ b/subsys/bluetooth/controller/ll_sw/ull.c
@@ -61,7 +61,12 @@
 #else
 #define TICKER_USER_LLL_OPS      (2 + 1)
 #endif /* CONFIG_BT_CTLR_LOW_LAT */
-#define TICKER_USER_ULL_HIGH_OPS (3 + 1)
+
+#if !defined(TICKER_USER_ULL_HIGH_VENDOR_OPS)
+#define TICKER_USER_ULL_HIGH_VENDOR_OPS 0
+#endif /* TICKER_USER_ULL_HIGH_VENDOR_OPS */
+
+#define TICKER_USER_ULL_HIGH_OPS (3 + TICKER_USER_ULL_HIGH_VENDOR_OPS + 1)
 #define TICKER_USER_ULL_LOW_OPS  (1 + 1)
 #define TICKER_USER_THREAD_OPS   (1 + 1)