diff --git a/conf/common.rmk b/conf/common.rmk
index 98daa0839..d790abade 100644
--- a/conf/common.rmk
+++ b/conf/common.rmk
@@ -634,15 +634,15 @@ keystatus_mod_CFLAGS = $(COMMON_CFLAGS)
 keystatus_mod_LDFLAGS = $(COMMON_LDFLAGS)
 
 # For normal.mod.
+ifneq (, $(FONT_SOURCE))
+normal/charset.c_DEPENDENCIES = widthspec.h
+endif
 normal_mod_SOURCES = normal/main.c normal/cmdline.c normal/dyncmd.c \
 	normal/auth.c normal/autofs.c normal/handler.c \
 	normal/color.c normal/completion.c normal/datetime.c normal/menu.c \
 	normal/menu_entry.c normal/menu_text.c normal/charset.c \
 	normal/misc.c normal/crypto.c normal/term.c normal/context.c \
 	unidata.c
-ifneq (, $(FONT_SOURCE))
-normal/charset.c_SOURCES += widthspec.h
-endif
 
 normal_mod_CFLAGS = $(COMMON_CFLAGS)
 normal_mod_LDFLAGS = $(COMMON_LDFLAGS)