diff --git a/configure.in b/configure.in
index a8ef7347..05cd3814 100644
--- a/configure.in
+++ b/configure.in
@@ -109,7 +109,7 @@ BIRD_CHECK_INTEGERS
 BIRD_CHECK_ENDIAN
 BIRD_CHECK_STRUCT_ALIGN
 BIRD_CHECK_TIME_T
-BIRD_CHECK_STRUCT_MREQN
+BIRD_CHECK_STRUCT_IP_MREQN
 
 if test "$enable_debug" = yes ; then
 	AC_DEFINE(PATH_CONFIG_DIR, ".")