diff --git a/recipes-games/freeciv/freeciv.inc b/recipes-games/freeciv/freeciv.inc
index 8fb20c3..6626c29 100644
--- a/recipes-games/freeciv/freeciv.inc
+++ b/recipes-games/freeciv/freeciv.inc
@@ -26,6 +26,7 @@ inherit autotools pkgconfig gettext
 
 EXTRA_OECONF = "\
 ac_cv_working_gettimeofday=yes \
+ac_cv_func_working_vsnprintf=yes \
 --enable-patient-connect \
 --enable-shared --enable-client=${FREECIV_GUI} \
 --disable-mapimg \