diff --git a/include/arch/aarch64/arch.h b/include/arch/aarch64/arch.h
index 2b2c116..19dd8c5 100644
--- a/include/arch/aarch64/arch.h
+++ b/include/arch/aarch64/arch.h
@@ -264,8 +264,8 @@
 			 (U(1) << 22) | (U(1) << 18) | (U(1) << 16) | \
 			 (U(1) << 11) | (U(1) << 5) | (U(1) << 4))
 
-#define SCTLR_EL1_RES1	((U(1) << 29) | (U(1) << 28) | (U(1) << 23) | \
-			 (U(1) << 22) | (U(1) << 20) | (U(1) << 11))
+#define SCTLR_EL1_RES1	((UL(1) << 29) | (UL(1) << 28) | (UL(1) << 23) | \
+			 (UL(1) << 22) | (UL(1) << 20) | (UL(1) << 11))
 #define SCTLR_AARCH32_EL1_RES1 \
 			((U(1) << 23) | (U(1) << 22) | (U(1) << 11) | \
 			 (U(1) << 4) | (U(1) << 3))