diff --git a/include/lib/cpus/aarch32/cortex_a57.h b/include/lib/cpus/aarch32/cortex_a57.h
index f7005da..ffabd61 100644
--- a/include/lib/cpus/aarch32/cortex_a57.h
+++ b/include/lib/cpus/aarch32/cortex_a57.h
@@ -45,6 +45,7 @@
 #define CORTEX_A57_CPUACTLR				p15, 0, c15
 
 #define CORTEX_A57_CPUACTLR_DIS_LOAD_PASS_DMB		(ULL(1) << 59)
+#define CORTEX_A57_CPUACTLR_DIS_DMB_NULLIFICATION	(ULL(1) << 58)
 #define CORTEX_A57_CPUACTLR_DIS_LOAD_PASS_STORE		(ULL(1) << 55)
 #define CORTEX_A57_CPUACTLR_GRE_NGRE_AS_NGNRE		(ULL(1) << 54)
 #define CORTEX_A57_CPUACTLR_DIS_OVERREAD		(ULL(1) << 52)