diff --git a/include/drivers/arm/cci.h b/include/drivers/arm/cci.h
index c5ddcfd..5aea95a 100644
--- a/include/drivers/arm/cci.h
+++ b/include/drivers/arm/cci.h
@@ -100,7 +100,7 @@
 
 #define SLAVE_IF_UNUSED			-1
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <stdint.h>
 
@@ -121,5 +121,5 @@
 void cci_enable_snoop_dvm_reqs(unsigned int master_id);
 void cci_disable_snoop_dvm_reqs(unsigned int master_id);
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 #endif /* CCI_H */
diff --git a/include/drivers/arm/ccn.h b/include/drivers/arm/ccn.h
index 9c3abac..7f73768 100644
--- a/include/drivers/arm/ccn.h
+++ b/include/drivers/arm/ccn.h
@@ -46,7 +46,7 @@
  */
 #define CCN_GET_RUN_STATE(pstate)	(pstate & 0xf)
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 #include <stdint.h>
 
 /*
@@ -109,5 +109,5 @@
 					unsigned int node_id,
 					unsigned int reg_offset);
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 #endif /* CCN_H */
diff --git a/include/drivers/arm/css/sds.h b/include/drivers/arm/css/sds.h
index 114ae92..db4cbaa 100644
--- a/include/drivers/arm/css/sds.h
+++ b/include/drivers/arm/css/sds.h
@@ -70,7 +70,7 @@
 #define SDS_ERR_STRUCT_NOT_FOUND	-3
 #define SDS_ERR_STRUCT_NOT_FINALIZED	-4
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 #include <stddef.h>
 #include <stdint.h>
 
@@ -85,6 +85,6 @@
 		size_t size, sds_access_mode_t mode);
 int sds_struct_write(uint32_t structure_id, unsigned int fld_off, void *data,
 		size_t size, sds_access_mode_t mode);
-#endif /*__ASSEMBLY__ */
+#endif /*__ASSEMBLER__ */
 
 #endif /* SDS_H */
diff --git a/include/drivers/arm/fvp/fvp_pwrc.h b/include/drivers/arm/fvp/fvp_pwrc.h
index ca173f3..39e2516 100644
--- a/include/drivers/arm/fvp/fvp_pwrc.h
+++ b/include/drivers/arm/fvp/fvp_pwrc.h
@@ -35,7 +35,7 @@
 
 #define PSYSR_INVALID		U(0xffffffff)
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <stdint.h>
 
@@ -50,6 +50,6 @@
 unsigned int fvp_pwrc_read_psysr(u_register_t mpidr);
 unsigned int fvp_pwrc_get_cpu_wkr(u_register_t mpidr);
 
-#endif /*__ASSEMBLY__*/
+#endif /*__ASSEMBLER__*/
 
 #endif /* FVP_PWRC_H */
diff --git a/include/drivers/arm/gicv2.h b/include/drivers/arm/gicv2.h
index 6bc5101..ebcb216 100644
--- a/include/drivers/arm/gicv2.h
+++ b/include/drivers/arm/gicv2.h
@@ -116,7 +116,7 @@
 /* Interrupt ID mask for HPPIR, AHPPIR, IAR and AIAR CPU Interface registers */
 #define INT_ID_MASK		U(0x3ff)
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <cdefs.h>
 #include <stdint.h>
@@ -184,5 +184,5 @@
 unsigned int gicv2_set_pmr(unsigned int mask);
 void gicv2_interrupt_set_cfg(unsigned int id, unsigned int cfg);
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 #endif /* GICV2_H */
diff --git a/include/drivers/arm/gicv3.h b/include/drivers/arm/gicv3.h
index 72221ac..9c72d4d 100644
--- a/include/drivers/arm/gicv3.h
+++ b/include/drivers/arm/gicv3.h
@@ -208,7 +208,7 @@
 #define GITS_CTLR_QUIESCENT_SHIFT	31
 #define GITS_CTLR_QUIESCENT_BIT		BIT_32(GITS_CTLR_QUIESCENT_SHIFT)
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <stdbool.h>
 #include <stdint.h>
@@ -406,5 +406,5 @@
 void gicv3_clear_interrupt_pending(unsigned int id, unsigned int proc_num);
 unsigned int gicv3_set_pmr(unsigned int mask);
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 #endif /* GICV3_H */
diff --git a/include/drivers/arm/pl011.h b/include/drivers/arm/pl011.h
index f201f00..8733d19 100644
--- a/include/drivers/arm/pl011.h
+++ b/include/drivers/arm/pl011.h
@@ -83,7 +83,7 @@
 
 #define CONSOLE_T_PL011_BASE	CONSOLE_T_DRVDATA
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <stdint.h>
 
@@ -101,6 +101,6 @@
 int console_pl011_register(uintptr_t baseaddr, uint32_t clock, uint32_t baud,
 			   console_pl011_t *console);
 
-#endif /*__ASSEMBLY__*/
+#endif /*__ASSEMBLER__*/
 
 #endif /* PL011_H */
diff --git a/include/drivers/arm/sp805.h b/include/drivers/arm/sp805.h
index 551bfe4..b00ede1 100644
--- a/include/drivers/arm/sp805.h
+++ b/include/drivers/arm/sp805.h
@@ -21,7 +21,7 @@
 #define SP805_CTR_RESEN			(U(1) << 1)
 #define SP805_CTR_INTEN			(U(1) << 0)
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <stdint.h>
 
@@ -31,6 +31,6 @@
 void sp805_stop(uintptr_t base);
 void sp805_refresh(uintptr_t base, unsigned int ticks);
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 
 #endif /* SP805_H */
diff --git a/include/drivers/arm/tzc400.h b/include/drivers/arm/tzc400.h
index 98ef0ec..32aeb03 100644
--- a/include/drivers/arm/tzc400.h
+++ b/include/drivers/arm/tzc400.h
@@ -93,7 +93,7 @@
 #define TZC_400_REGION_SIZE			U(0x20)
 #define TZC_400_ACTION_OFF			U(0x4)
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <cdefs.h>
 #include <stdint.h>
@@ -154,6 +154,6 @@
 	tzc400_disable_filters();
 }
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 
 #endif /* TZC400_H */
diff --git a/include/drivers/arm/tzc_dmc500.h b/include/drivers/arm/tzc_dmc500.h
index 24bfaeb..cce074c 100644
--- a/include/drivers/arm/tzc_dmc500.h
+++ b/include/drivers/arm/tzc_dmc500.h
@@ -121,7 +121,7 @@
 /* Length of registers for configuring each region */
 #define TZC_DMC500_REGION_SIZE				U(0x018)
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <stdint.h>
 
@@ -147,5 +147,5 @@
 int tzc_dmc500_verify_complete(void);
 
 
-#endif /* __ASSEMBLY__ */
+#endif /* __ASSEMBLER__ */
 #endif /* TZC_DMC500_H */