diff --git a/c/input/Makefile.am b/c/input/Makefile.am
index 23062b857..094ad01ad 100644
--- a/c/input/Makefile.am
+++ b/c/input/Makefile.am
@@ -6,6 +6,7 @@ libinput_la_SOURCES=	\
 			file_reader_mmap.h \
 			file_reader_stdio.c \
 			file_reader_stdio.h \
+			json.c \
 			line_readers.c \
 			line_readers.h \
 			lrec_reader.h \