diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index e64c4d4cf..4441688cd 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -295,30 +295,30 @@ endif
 # Enable the dynamic translation tables library.
 ifeq (${ARCH},aarch32)
     ifeq (${RESET_TO_SP_MIN},1)
-        BL32_CFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
+        BL32_CPPFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
     endif
 else # AArch64
     ifeq (${RESET_TO_BL31},1)
-        BL31_CFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
+        BL31_CPPFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
     endif
     ifeq (${SPD},trusty)
-        BL31_CFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
+        BL31_CPPFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
     endif
 endif
 
 ifeq (${ALLOW_RO_XLAT_TABLES}, 1)
     ifeq (${ARCH},aarch32)
-        BL32_CFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
+        BL32_CPPFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
     else # AArch64
-        BL31_CFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
+        BL31_CPPFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
         ifeq (${SPD},tspd)
-            BL32_CFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
+            BL32_CPPFLAGS +=	-DPLAT_RO_XLAT_TABLES=1
         endif
     endif
 endif
 
 ifeq (${USE_DEBUGFS},1)
-    BL31_CFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
+    BL31_CPPFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
 endif
 
 # Add support for platform supplied linker script for BL31 build
diff --git a/plat/arm/board/juno/platform.mk b/plat/arm/board/juno/platform.mk
index f07c1b163..dfdefa170 100644
--- a/plat/arm/board/juno/platform.mk
+++ b/plat/arm/board/juno/platform.mk
@@ -147,19 +147,19 @@ ENABLE_SVE_FOR_NS		:=	0
 # Enable the dynamic translation tables library.
 ifeq (${ARCH},aarch32)
     ifeq (${RESET_TO_SP_MIN},1)
-        BL32_CFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
+        BL32_CPPFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
     endif
 else
     ifeq (${RESET_TO_BL31},1)
-        BL31_CFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
+        BL31_CPPFLAGS	+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
     endif
 endif
 
 ifeq (${ALLOW_RO_XLAT_TABLES}, 1)
     ifeq (${JUNO_AARCH32_EL3_RUNTIME}, 1)
-        BL32_CFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
+        BL32_CPPFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
     else
-        BL31_CFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
+        BL31_CPPFLAGS	+=	-DPLAT_RO_XLAT_TABLES=1
     endif
 endif
 
diff --git a/plat/arm/board/rdn1edge/platform.mk b/plat/arm/board/rdn1edge/platform.mk
index 135676d43..571d6513e 100644
--- a/plat/arm/board/rdn1edge/platform.mk
+++ b/plat/arm/board/rdn1edge/platform.mk
@@ -36,7 +36,7 @@ BL2_SOURCES		+=	${RDN1EDGE_BASE}/rdn1edge_trusted_boot.c
 endif
 
 # Enable dynamic addition of MMAP regions in BL31
-BL31_CFLAGS		+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
+BL31_CPPFLAGS		+=	-DPLAT_XLAT_TABLES_DYNAMIC=1
 
 # Add the FDT_SOURCES and options for Dynamic Config
 FDT_SOURCES		+=	${RDN1EDGE_BASE}/fdts/${PLAT}_fw_config.dts