diff --git a/core/sys/linux/sys.odin b/core/sys/linux/sys.odin
index 5fc4a0efa..985623e85 100644
--- a/core/sys/linux/sys.odin
+++ b/core/sys/linux/sys.odin
@@ -1,3 +1,4 @@
+#+build linux
 #+no-instrumentation
 package linux