diff --git a/c/configure.in b/c/configure.in
index 0017917f..47eb8aa6 100644
--- a/c/configure.in
+++ b/c/configure.in
@@ -1,4 +1,4 @@
-AC_INIT(pack.c)
+AC_INIT(unpack.c)
 AM_INIT_AUTOMAKE(msgpackc, 0.1.0)
 AC_CONFIG_HEADER(config.h)