diff --git a/configure b/configure
index b934017f9c..d25e42a9a2 100755
--- a/configure
+++ b/configure
@@ -7287,6 +7287,7 @@ if test "$_libnut" = auto ; then
 #include <stdlib.h>
 #include <inttypes.h>
 #include <libnut.h>
+nut_context_tt * nut;
 int main(void) { (void)nut_error(0); return 0; }
 EOF
   _libnut=no