diff --git a/src/arch/arm64/include/armv8/arch/barrier.h b/src/arch/arm64/include/armv8/arch/barrier.h
index 99a417b..2be2bd3 100644
--- a/src/arch/arm64/include/armv8/arch/barrier.h
+++ b/src/arch/arm64/include/armv8/arch/barrier.h
@@ -21,7 +21,7 @@
 #define wmb()		asm volatile("dsb st" : : : "memory")
 
 #if CONFIG(SMP)
-#define barrier() __asm__ __volatile__("": : :"memory")
+#define barrier() __asm__ __volatile__("" : : : "memory")
 #endif
 
 #define nop()		asm volatile("nop");