diff --git a/configure.ac b/configure.ac
index bae483b..f512871 100644
--- a/configure.ac
+++ b/configure.ac
@@ -168,6 +168,8 @@
 AC_CHECK_FUNCS([strtol])
 AC_CHECK_FUNCS([sqrt])
 
+AX_SIGNED_RIGHT_SHIFT
+
 AX_THRIFT_GEN(cpp, [C++], yes)
 AM_CONDITIONAL([THRIFT_GEN_cpp], [test "$ax_thrift_gen_cpp" = "yes"])
 AX_THRIFT_GEN(java, [Java], yes)