diff --git a/config.cpp b/config.cpp
index 0eb624e6..86d63811 100644
--- a/config.cpp
+++ b/config.cpp
@@ -3337,6 +3337,7 @@ EX int config3 = addHook(hooks_configfile, 100, [] {
     "land size in landscape structure",
     "Each cell gets three coordinates, each of which change smoothly, using the same method as used for the generation of landscapes e.g. in Dragon Chasms. "
     "Then, we find a cell of the bitruncated cubic honeycomb at these cordinates, and this cell determines which land it is. The bigger the value, the larger the lands.", 'R')
+  ->set_sets([] { dialog::bound_low(1); })
   ->set_reaction([] { if(game_active) { stop_game(); start_game(); } });
 
   param_i(curse_percentage, "curse_percentage")->editable(0, 100, 1,
diff --git a/landgen.cpp b/landgen.cpp
index 55028b3c..db046362 100644
--- a/landgen.cpp
+++ b/landgen.cpp
@@ -2921,7 +2921,7 @@ EX void set_land_for_geometry(cell *c) {
       return;
       }
     if(land_structure == lsLandscape) {
-      if(landscape_div < 0) landscape_div = 1;
+      if(landscape_div <= 0) landscape_div = 1;
       array<int, 3> a;
       for(int i=0; i<3; i++) a[i] = getCdata(c, i);
       auto& ld = landscape_div;