diff --git a/include/arch/aarch32/arch_helpers.h b/include/arch/aarch32/arch_helpers.h
index 94cf7ea..82efb18 100644
--- a/include/arch/aarch32/arch_helpers.h
+++ b/include/arch/aarch32/arch_helpers.h
@@ -166,7 +166,7 @@
 #define DEFINE_SYSOP_TYPE_FUNC(_op, _type)				\
 static inline void _op ## _type(void)					\
 {									\
-	__asm__ (#_op " " #_type);					\
+	__asm__ (#_op " " #_type : : : "memory");			\
 }
 
 /* Define function for system instruction with register parameter */
diff --git a/include/arch/aarch64/arch_helpers.h b/include/arch/aarch64/arch_helpers.h
index 1f2f4a9..5d1bc94 100644
--- a/include/arch/aarch64/arch_helpers.h
+++ b/include/arch/aarch64/arch_helpers.h
@@ -80,7 +80,7 @@
 #define DEFINE_SYSOP_TYPE_FUNC(_op, _type)		\
 static inline void _op ## _type(void)			\
 {							\
-	__asm__ (#_op " " #_type);			\
+	__asm__ (#_op " " #_type : : : "memory");			\
 }
 
 /* Define function for system instruction with register parameter */