diff --git a/configure.ac b/configure.ac
index 3e0f8aa..846e3b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,6 +29,7 @@ AC_PROG_CXX
 AC_PROG_CC
 AM_PROG_CC_C_O
 AM_PROG_AS
+AC_PROG_CC_STDC
 # disable static libs by default - we only use a couple
 AC_DISABLE_STATIC
 AC_PROG_LIBTOOL