diff --git a/monitoring-plugins.spec b/monitoring-plugins.spec
index 2fa41bc..b070fd6 100644
--- a/monitoring-plugins.spec
+++ b/monitoring-plugins.spec
@@ -1121,7 +1121,7 @@ find -type f -exec chmod 644 {} +
 
 %build
 export CFLAGS="%{optflags} -fno-strict-aliasing -DLDAP_DEPRECATED"
-sh autogen.sh
+autoreconf -fi
 chmod +x configure # needed as configure script is not executable in 1.5..
 %configure \
 	--enable-static=no \