diff --git a/src/pkg/runtime/mcentral.c b/src/pkg/runtime/mcentral.c
index 8463d4e..ff0c2d1 100644
--- a/src/pkg/runtime/mcentral.c
+++ b/src/pkg/runtime/mcentral.c
@@ -15,7 +15,7 @@
 // so that it is faster to move those lists between MCaches and MCentrals.
 
 #include "runtime.h"
-#include "arch.h"
+#include "arch_GOARCH.h"
 #include "malloc.h"
 
 static bool MCentral_Grow(MCentral *c);