diff --git a/include/lib/el3_runtime/aarch32/context.h b/include/lib/el3_runtime/aarch32/context.h
index 6447360..1ea19ca 100644
--- a/include/lib/el3_runtime/aarch32/context.h
+++ b/include/lib/el3_runtime/aarch32/context.h
@@ -1,26 +1,28 @@
 /*
- * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __CONTEXT_H__
-#define __CONTEXT_H__
+#ifndef CONTEXT_H
+#define CONTEXT_H
+
+#include <utils_def.h>
 
 /*******************************************************************************
  * Constants that allow assembler code to access members of and the 'regs'
  * structure at their correct offsets.
  ******************************************************************************/
-#define CTX_REGS_OFFSET		0x0
-#define CTX_GPREG_R0		0x0
-#define CTX_GPREG_R1		0x4
-#define CTX_GPREG_R2		0x8
-#define CTX_GPREG_R3		0xC
-#define CTX_LR			0x10
-#define CTX_SCR			0x14
-#define CTX_SPSR		0x18
-#define CTX_NS_SCTLR		0x1C
-#define CTX_REGS_END		0x20
+#define CTX_REGS_OFFSET		U(0x0)
+#define CTX_GPREG_R0		U(0x0)
+#define CTX_GPREG_R1		U(0x4)
+#define CTX_GPREG_R2		U(0x8)
+#define CTX_GPREG_R3		U(0xC)
+#define CTX_LR			U(0x10)
+#define CTX_SCR			U(0x14)
+#define CTX_SPSR		U(0x18)
+#define CTX_NS_SCTLR		U(0x1C)
+#define CTX_REGS_END		U(0x20)
 
 #ifndef __ASSEMBLY__
 
@@ -31,7 +33,7 @@
  * Common constants to help define the 'cpu_context' structure and its
  * members below.
  */
-#define WORD_SHIFT		2
+#define WORD_SHIFT		U(2)
 #define DEFINE_REG_STRUCT(name, num_regs)	\
 	typedef struct name {			\
 		uint32_t _regs[num_regs];	\
@@ -64,4 +66,4 @@
 
 #endif /* __ASSEMBLY__ */
 
-#endif /* __CONTEXT_H__ */
+#endif /* CONTEXT_H */