diff --git a/configure.ac b/configure.ac
index ffb111a..5990abf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5,7 +5,7 @@ rm -f config.cache
 
 AC_INIT(forecasts, 0.2.0, viktor@bloka.org)
 AC_PREREQ(2.52)
-AC_CONFIG_SRCDIR(configure.in)
+AC_CONFIG_SRCDIR(configure.ac)
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST
 AC_ISC_POSIX