diff --git a/auth/sudo_auth.h b/auth/sudo_auth.h
index 57b6c5d3b..f5a1cfd2d 100644
--- a/auth/sudo_auth.h
+++ b/auth/sudo_auth.h
@@ -94,7 +94,7 @@ int securid_verify __P((struct passwd *pw, char *pass, sudo_auth *auth));
 #  define AUTH_STANDALONE \
 	AUTH_ENTRY(0, "SecurId", \
 	    securid_init, securid_setup, securid_verify, NULL)
-#elif defined(HAVE_SIA)
+#elif defined(HAVE_SIA_SES_INIT)
 #  define AUTH_STANDALONE \
 	AUTH_ENTRY(0, "sia", \
 	    NULL, sia_setup, sia_verify, sia_cleanup)
diff --git a/config.h.in b/config.h.in
index 66901192f..70de108a3 100644
--- a/config.h.in
+++ b/config.h.in
@@ -354,8 +354,8 @@
 /* Define to 1 if you have the `set_auth_parameters' function. */
 #undef HAVE_SET_AUTH_PARAMETERS
 
-/* Define to 1 if you use SIA authentication. */
-#undef HAVE_SIA
+/* Define to 1 if you have the `sia_ses_init' function. */
+#undef HAVE_SIA_SES_INIT
 
 /* Define to 1 if you have the `sigaction' function. */
 #undef HAVE_SIGACTION
diff --git a/configure b/configure
index 1817457d6..4b03834a0 100755
--- a/configure
+++ b/configure
@@ -20014,10 +20014,6 @@ done
     if test "$found" = "true"; then
 	AUTH_EXCL=SIA
 	AUTH_OBJS="$AUTH_OBJS sia.o"
-	cat >>confdefs.h <<\_ACEOF
-#define HAVE_SIA 1
-_ACEOF
-
     fi
 fi
 
@@ -24918,8 +24914,6 @@ fi
 
 
 
-
-
 
 
 
diff --git a/configure.in b/configure.in
index ed1485bde..c4c9f51b6 100644
--- a/configure.in
+++ b/configure.in
@@ -1955,7 +1955,6 @@ if test ${CHECKSIA-'false'} = "true"; then
     if test "$found" = "true"; then
 	AUTH_EXCL=SIA
 	AUTH_OBJS="$AUTH_OBJS sia.o"
-	AC_DEFINE(HAVE_SIA)
     fi
 fi
 
@@ -2568,7 +2567,6 @@ AH_TEMPLATE(HAVE_PAM, [Define to 1 if you use PAM authentication.])
 AH_TEMPLATE(HAVE_PROJECT_H, [Define to 1 if you have the <project.h> header file.])
 AH_TEMPLATE(HAVE_SECURID, [Define to 1 if you use SecurID for authentication.])
 AH_TEMPLATE(HAVE_SELINUX, [Define to 1 to enable SELinux RBAC support.])
-AH_TEMPLATE(HAVE_SIA, [Define to 1 if you use SIA authentication.])
 AH_TEMPLATE(HAVE_SIGACTION_T, [Define to 1 if <signal.h> has the sigaction_t typedef.])
 AH_TEMPLATE(HAVE_SKEY, [Define to 1 if you use S/Key.])
 AH_TEMPLATE(HAVE_SKEYACCESS, [Define to 1 if your S/Key library has skeyaccess().])