diff --git a/plat/juno/bl31_plat_setup.c b/plat/juno/bl31_plat_setup.c
index 5edc6af..b16ef05 100644
--- a/plat/juno/bl31_plat_setup.c
+++ b/plat/juno/bl31_plat_setup.c
@@ -138,8 +138,8 @@
  ******************************************************************************/
 void bl31_plat_arch_setup()
 {
-	configure_mmu_el3(TZRAM_BASE,
-			  TZRAM_SIZE,
+	configure_mmu_el3(BL31_RO_BASE,
+			  BL31_COHERENT_RAM_LIMIT - BL31_RO_BASE,
 			  BL31_RO_BASE,
 			  BL31_RO_LIMIT,
 			  BL31_COHERENT_RAM_BASE,