diff --git a/include/lib/cpus/aarch64/neoverse_n1.h b/include/lib/cpus/aarch64/neoverse_n1.h
index 8925827..952ae6e 100644
--- a/include/lib/cpus/aarch64/neoverse_n1.h
+++ b/include/lib/cpus/aarch64/neoverse_n1.h
@@ -30,6 +30,8 @@
  ******************************************************************************/
 #define NEOVERSE_N1_CPUECTLR_EL1	S3_0_C15_C1_4
 
+#define NEOVERSE_N1_WS_THR_L2_MASK	(ULL(3) << 24)
+
 /*******************************************************************************
  * CPU Auxiliary Control register specific definitions.
  ******************************************************************************/