diff --git a/configure.in b/configure.in

index e70c99a..60f366c 100644

--- a/configure.in

+++ b/configure.in

@@ -1416,7 +1416,7 @@ inline static unsigned int sleep(unsigned int seconds) {

 #endif /* CONFIG_H */

 ])

-AM_CONFIG_HEADER(config.h)

+AC_CONFIG_HEADERS(config.h)

 AC_OUTPUT(Makefile

 libsasl2.pc