diff --git a/landlock.cpp b/landlock.cpp
index a3a5dfdb..ab8f69cc 100644
--- a/landlock.cpp
+++ b/landlock.cpp
@@ -616,6 +616,8 @@ EX int old_daily_id = 1000000;
 
 const int landscapes_when = 177;
 
+EX const int frog_when = 205;
+
 // check if the given land should appear in lists
 EX land_validity_t& land_validity(eLand l) {
 
@@ -624,6 +626,9 @@ EX land_validity_t& land_validity(eLand l) {
 
   using namespace lv;
   
+  if(old_daily_id < frog_when && among(l, laFrog, laEclectic, laWet))
+    return not_implemented;
+  
   if(walls_not_implemented() && isCrossroads(l))
     return no_walls;