diff --git a/clocks/fujinet/fn.clock.system.s b/clocks/fujinet/fn.clock.system.s
index ffa2d00..d19ee56 100644
--- a/clocks/fujinet/fn.clock.system.s
+++ b/clocks/fujinet/fn.clock.system.s
@@ -105,7 +105,7 @@ search_unit:
         dex
         bne     search_unit
 continue_slot_search:
-        ldx     sp_call+1 ; restore card
+        ldx     sp_call_hi ; restore card
         dex
         cpx     #$C0
         bne     search_slot
diff --git a/clocks/jumbo/Makefile b/clocks/jumbo/Makefile
index 1384855..3da532f 100644
--- a/clocks/jumbo/Makefile
+++ b/clocks/jumbo/Makefile
@@ -4,7 +4,14 @@ LDFLAGS = --config apple2-asm.cfg
 
 OUTDIR = out
 
-HEADERS = $(wildcard *.inc) $(wildcard ../inc/*.inc)
+HEADERS = $(wildcard *.inc) $(wildcard ../inc/*.inc) \
+	../ns.clock/ns.clock.system.s \
+	../romx/romxrtc.system.s \
+	../dclock/dclock.system.s \
+	../fujinet/fn.clock.system.s \
+	../fujinet/smartport.inc \
+	../cricket/cricket.system.s
+
 
 TARGETS = \
 	$(OUTDIR)/clock.system.SYS