diff --git a/libmicrohttpd/configure.ac b/libmicrohttpd/configure.ac
index 746fb73..db46683 100644
--- a/libmicrohttpd/configure.ac
+++ b/libmicrohttpd/configure.ac
@@ -163,7 +163,7 @@ netbsd*)
      AC_DEFINE_UNQUOTED(CYGWIN,1,[This is a Cygwin system])
      AM_CONDITIONAL(HAVE_GNU_LD, false)
      AM_CONDITIONAL(HAVE_W32, false)
-     LDFLAGS="$LDFLAGS -no-undefined"
+     LDFLAGS="$LDFLAGS -Wl,-no-undefined"
      ;;
 *mingw*)
      AC_DEFINE_UNQUOTED(MINGW,1,[This is a MinGW system])