diff --git a/configure.ac b/configure.ac
index bceb4ca242..8e44ff1a39 100644
--- a/configure.ac
+++ b/configure.ac
@@ -42,6 +42,7 @@ AM_MAINTAINER_MODE
 AC_PROG_INSTALL
 AC_PROG_CC
 AC_PROG_LIBTOOL
+AM_PROG_AS
 
 zfsconfig=all
 kernelsrc=