updated for version 7.0-236
diff --git a/src/config.h.in b/src/config.h.in
index 9b42b92..3d9e162 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -176,6 +176,7 @@
 #undef HAVE_SYSCONF
 #undef HAVE_SYSCTL
 #undef HAVE_SYSINFO
+#undef HAVE_SYSINFO_MEM_UNIT
 #undef HAVE_TGETENT
 #undef HAVE_TOWLOWER
 #undef HAVE_TOWUPPER