diff --git a/tools/Makefile b/tools/Makefile
index 21cc090..af0de47 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -137,7 +137,7 @@
 		$(CC) $(CFLAGS) $(HOST_LDFLAGS) -o $@ $^
 		$(STRIP) $@
 
-$(obj)mkimage$(SFX):	$(obj)mkimage.o $(obj)crc32.o $(obj)sha1.o
+$(obj)mkimage$(SFX):	$(obj)mkimage.o $(obj)crc32.o
 		$(CC) $(CFLAGS) $(HOST_LDFLAGS) -o $@ $^
 		$(STRIP) $@