diff --git a/src/ciderlib/input/Makefile.am b/src/ciderlib/input/Makefile.am
index c8c34ac62..0a476517d 100644
--- a/src/ciderlib/input/Makefile.am
+++ b/src/ciderlib/input/Makefile.am
@@ -23,7 +23,7 @@ libciderinput_la_SOURCES = 	\
 		mobset.c	\
 		models.c	\
 		modlset.c	\
-		options.c	\
+		optionsc.c	\
 		outpset.c	\
 		output.c