diff --git a/arch/c6x/include/asm/Kbuild b/arch/c6x/include/asm/Kbuild
index 2de73391b81e..ae0a51f5376c 100644
--- a/arch/c6x/include/asm/Kbuild
+++ b/arch/c6x/include/asm/Kbuild
@@ -41,6 +41,7 @@ generic-y += resource.h
 generic-y += scatterlist.h
 generic-y += segment.h
 generic-y += sembuf.h
+generic-y += serial.h
 generic-y += shmbuf.h
 generic-y += shmparam.h
 generic-y += siginfo.h