diff --git a/Makefile b/Makefile
index 4ea57e4..3fbbfcf 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@
 
 LIB     = orca
 SRCS	= cc.asm ctype.asm orca.asm signal2.c stdlib.asm string.asm \
-	  time.asm toolglue.asm vars.asm
+	  time.asm toolglue.asm vars.asm int64.asm
 
 buildall .PHONY: build assert.o