diff --git a/src/map.c b/src/map.c
index 7aaa779..6905e52 100644
--- a/src/map.c
+++ b/src/map.c
@@ -203,7 +203,7 @@ static void map_update(void) {
         nstanding++;
       }
       else if(f != sys->planets[i].faction &&
-          (sys->planets[i].faction!=0)) {
+          (sys->planets[i].faction>0)) {
         /* TODO: more verbosity. */
         snprintf(buf, 100, "Multiple");
         break;