diff --git a/plat/fvp/bl31_plat_setup.c b/plat/fvp/bl31_plat_setup.c
index 033a8fad5..7b60a780a 100644
--- a/plat/fvp/bl31_plat_setup.c
+++ b/plat/fvp/bl31_plat_setup.c
@@ -210,8 +210,8 @@ void bl31_plat_arch_setup()
 	fvp_cci_setup();
 #endif
 
-	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,