diff --git a/configure.ac b/configure.ac
index 40ade600..b35ac85c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -22,8 +22,8 @@ test "$prefix" = "/usr" && exec_prefix=""
 
 AC_USE_SYSTEM_EXTENSIONS
 
-AM_ENABLE_STATIC
-AM_ENABLE_SHARED
+AC_ENABLE_STATIC
+AC_ENABLE_SHARED
 
 AM_MAINTAINER_MODE