diff --git a/libctru/include/3ds/synchronization.h b/libctru/include/3ds/synchronization.h
index fdf52f8..bbd18f4 100644
--- a/libctru/include/3ds/synchronization.h
+++ b/libctru/include/3ds/synchronization.h
@@ -33,6 +33,12 @@ static inline void __dsb(void)
 	__asm__ __volatile__("mcr p15, 0, %[val], c7, c10, 4" :: [val] "r" (0) : "memory");
 }
 
+/// Performs a Data Memory Barrier operation.
+static inline void __dmb(void)
+{
+	__asm__ __volatile__("mcr p15, 0, %[val], c7, c10, 5" :: [val] "r" (0) : "memory");
+}
+
 /// Performs a clrex operation.
 static inline void __clrex(void)
 {