diff --git a/configure.ac b/configure.ac
index d1bf6a33..472e158a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,7 +14,7 @@ AM_INIT_AUTOMAKE([1.6 dist-bzip2])
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 AC_USE_SYSTEM_EXTENSIONS
-AM_PROG_CC_STDC
+AC_PROG_CC
 AM_PROG_CC_C_O
 AC_C___ATTRIBUTE__