Index: src/runtime/Makefile
==================================================================
--- src/runtime/Makefile
+++ src/runtime/Makefile
@@ -13,12 +13,13 @@
        sparsearray.m		\
        static-instances.m	\
        threading.m		\
        asm/amd64-elf/lookup.S	\
        asm/x86-elf/lookup.S
+INCLUDES = runtime.h
 
 include ../../buildsys.mk
 
 CPPFLAGS += -I. -I.. -I../..
 AS = ${OBJC}
 ASFLAGS = ${CPPFLAGS}
 LD = ${OBJC}