diff --git a/Makefile b/Makefile
index a9a4d9058..cb47491a4 100644
--- a/Makefile
+++ b/Makefile
@@ -1067,8 +1067,7 @@ ifneq ($(findstring clang,$(notdir $(CC))),)
 else
     CPPFLAGS		+= 	-Wno-error=deprecated-declarations -Wno-error=cpp
 endif
-# __ASSEMBLY__ is deprecated in favor of the compiler-builtin __ASSEMBLER__.
-ASFLAGS	+= -D__ASSEMBLY__
+
 # AARCH32/AARCH64 macros are deprecated in favor of the compiler-builtin __aarch64__.
 ifeq (${ARCH},aarch32)
         $(eval $(call add_define,AARCH32))
diff --git a/include/drivers/marvell/cache_llc.h b/include/drivers/marvell/cache_llc.h
index d6dd65382..72111b374 100644
--- a/include/drivers/marvell/cache_llc.h
+++ b/include/drivers/marvell/cache_llc.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2018 Marvell International Ltd.
+ * Copyright (C) 2018-2020 Marvell International Ltd.
  *
  * SPDX-License-Identifier:     BSD-3-Clause
  * https://spdx.org/licenses
@@ -57,6 +57,6 @@ int llc_sram_enable(int ap_index, int size);
 void llc_sram_disable(int ap_index);
 int llc_sram_test(int ap_index, int size, char *msg);
 #endif /* LLC_SRAM */
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 
 #endif /* CACHE_LLC_H */
diff --git a/plat/nvidia/tegra/include/drivers/memctrl_v2.h b/plat/nvidia/tegra/include/drivers/memctrl_v2.h
index 1e153063a..9af3027ea 100644
--- a/plat/nvidia/tegra/include/drivers/memctrl_v2.h
+++ b/plat/nvidia/tegra/include/drivers/memctrl_v2.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
  * Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
@@ -26,7 +26,7 @@
 #define MC_SMMU_BYPASS_CONFIG_SETTINGS		(MC_SMMU_BYPASS_CONFIG_WRITE_ACCESS_BIT | \
 						 MC_SMMU_CTRL_TBU_BYPASS_SPL_STREAMID)
 
-#ifndef __ASSEMBLY__
+#ifndef	__ASSEMBLER__
 
 #include <assert.h>
 
@@ -53,9 +53,9 @@ typedef struct mc_regs {
 		.val = 0xFFFFFFFFU, \
 	}
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <lib/mmio.h>
 
diff --git a/plat/nvidia/tegra/include/t186/tegra_mc_def.h b/plat/nvidia/tegra/include/t186/tegra_mc_def.h
index 398453eb9..fa447725b 100644
--- a/plat/nvidia/tegra/include/t186/tegra_mc_def.h
+++ b/plat/nvidia/tegra/include/t186/tegra_mc_def.h
@@ -282,7 +282,7 @@
 #define  MC_CLIENT_HOTRESET_CTRL1_SCE_FLUSH_ENB			(1U << 24)
 #define MC_CLIENT_HOTRESET_STATUS1				0x974U
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 /*******************************************************************************
  * Structure to hold the transaction override settings to use to override
@@ -393,6 +393,6 @@ typedef struct mc_streamid_security_cfg {
 				  MC_TXN_OVERRIDE_CONFIG_CGID_##so_dev_axi_id); \
 	} while (0)
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 
 #endif /* TEGRA_MC_DEF_H */