diff --git a/src/backend/core/mmio/SI.hpp b/src/backend/core/mmio/SI.hpp
index 1cf5ea0f..c7358c24 100644
--- a/src/backend/core/mmio/SI.hpp
+++ b/src/backend/core/mmio/SI.hpp
@@ -36,4 +36,5 @@ struct SI {
 };
 
 static void DMA(Mem& mem, Registers& regs);
+#define SI_DMA_DELAY (65536 * 2)
 }
\ No newline at end of file
diff --git a/src/common.hpp b/src/common.hpp
index 1be7976b..ff139422 100644
--- a/src/common.hpp
+++ b/src/common.hpp
@@ -35,6 +35,5 @@ using m128i = __m128i;
 #define ELEMENT_INDEX(i) (7 - (i))
 #define BYTE_INDEX(i)   (15 - (i))
 
-#define SI_DMA_DELAY (65536 * 2)
 #define unlikely(exp) __builtin_expect(exp, 0)
 #define likely(exp) __builtin_expect(exp, 1)
\ No newline at end of file