diff --git a/include/arch/aarch64/smccc_helpers.h b/include/arch/aarch64/smccc_helpers.h
index e28697d..fac6fd9 100644
--- a/include/arch/aarch64/smccc_helpers.h
+++ b/include/arch/aarch64/smccc_helpers.h
@@ -9,7 +9,7 @@
 
 #include <lib/smccc.h>
 
-#ifndef __ASSEMBLY__
+#ifndef __ASSEMBLER__
 
 #include <stdbool.h>
 
@@ -82,6 +82,6 @@
 		_x4 = read_ctx_reg(regs, CTX_GPREG_X4);		\
 	} while (false)
 
-#endif /*__ASSEMBLY__*/
+#endif /*__ASSEMBLER__*/
 
 #endif /* SMCCC_HELPERS_H */