diff --git a/src/Makefile b/src/Makefile
index 5442ff0..74aff8e 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -4,12 +4,12 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-src =	melon.c iconv.c zlib.c jbig.c jbig2.c jpeg.c jp2.c \
-	cnki_caj.c cnki_hn.c cnki_kdh.c cnki_outline_tree.c \
-	cnki_pdf.c cnki_zlib.c cnki_jbig.c cnki_jbig2.c cnki.c \
+src =	melon.c iconv.c zlib.c jbig2.c jpeg.c jp2.c \
+	cnki_caj.c cnki_hn.c cnki_kdh.c cnki_outline_tree.c cnki_pdf.c \
+	cnki_zlib.c cnki_jbig.c cnki_jbig_dec.c cnki_jbig2.c cnki.c \
 	pdf_cnki.c pdf_get.c pdf_parser.c pdf_writer.c pdf.c
-inc =	extern.h version.h iconv.h zlib.h jbig.h jbig2.h jpeg.h jp2.h \
-	cnki.h pdf_cnki.h cnki_jbig.h pdf.h
+inc =	extern.h version.h iconv.h zlib.h jbig2.h jpeg.h jp2.h \
+	cnki.h pdf_cnki.h cnki_jbig.h cnki_jbig_dec.h pdf.h
 
 obj = ${src:.c=.o}
 
diff --git a/src/cnki_jbig.c b/src/cnki_jbig.c
index f35d1d5..acc43eb 100644
--- a/src/cnki_jbig.c
+++ b/src/cnki_jbig.c
@@ -8,7 +8,7 @@
 #include <string.h>
 
 #include "cnki_jbig.h"
-#include "jbig.h"
+#include "cnki_jbig_dec.h"
 
 int
 cnki_jbig(char **bitmap, int *bitmap_size,
diff --git a/src/jbig.c b/src/cnki_jbig_dec.c
similarity index 100%
rename from src/jbig.c
rename to src/cnki_jbig_dec.c
diff --git a/src/jbig.h b/src/cnki_jbig_dec.h
similarity index 100%
rename from src/jbig.h
rename to src/cnki_jbig_dec.h