diff --git a/tools/Makefile b/tools/Makefile
index 86985e8..e3cb3bf 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -80,6 +80,7 @@
 EXT_OBJ_FILES-$(CONFIG_BUILD_ENVCRC) += common/env_embedded.o
 EXT_OBJ_FILES-y += common/image.o
 EXT_OBJ_FILES-$(CONFIG_FIT) += common/image-fit.o
+EXT_OBJ_FILES-y += common/image-sig.o
 EXT_OBJ_FILES-y += lib/crc32.o
 EXT_OBJ_FILES-y += lib/md5.o
 EXT_OBJ_FILES-y += lib/sha1.o
@@ -154,6 +155,10 @@
 BINS	:= $(addprefix $(obj),$(sort $(BIN_FILES-y)))
 LIBFDT_OBJS	:= $(addprefix $(obj),$(LIBFDT_OBJ_FILES-y))
 
+# We cannot check CONFIG_FIT_SIGNATURE here since it is not set on the host
+FIT_SIG_OBJ_FILES	:= image-sig.o
+FIT_SIG_OBJS		:= $(addprefix $(obj),$(FIT_SIG_OBJ_FILES))
+
 HOSTOBJS := $(addprefix $(obj),$(OBJ_FILES-y))
 NOPEDOBJS := $(addprefix $(obj),$(NOPED_OBJ_FILES-y))
 
@@ -213,6 +218,7 @@
 			$(obj)image-fit.o \
 			$(obj)image.o \
 			$(obj)image-host.o \
+			$(FIT_SIG_OBJS) \
 			$(obj)imximage.o \
 			$(obj)kwbimage.o \
 			$(obj)pblimage.o \